First you have to decide what Bel Air body style you want to build as there are several to choose from, there are Hard Top, Sedan, Convertible and Nomad available in 1:25th scale and both AMT and Revell has several kits out there.
AMT has two different '57 Chevy toolings, the old one from the 60's and the new one from the late 90's with opening trunk and separate chassis, both are HT's, the old one isn't that bad but in my opinion the newer one is better and more detailed, the newer tooling was available in two basic versions, one stock, one stock Pro Shop with some additional parts and one hopped up version with tubbed rear fenderwells and big block engine.
Revell has at least four different '57 Chevy kits in 1:25th scale, the old '57 tooling from the 60's with opening doors and trunk, these came as both HT and Nomad in several versions and it's not that great kits, but they have recently done both a Sedan and a Convertible wich are good, they also have a Snap '57 HT in 1:25th scale. Revell did a new tooling 57 150 Utility Sedan of wich you can do the "Black Widow", it's not a Bel Air but it's a nice kit and the recent Bel Air Sedan and Convertible are based on this kit.
So if I sum this up the old kits has their place in the hobby but the new tooling kits are the best choice detail wise.
After what I have found out during my research the real Papa Truck was originally a 1976 VIT 200 Bicentennial Edition so it was painted as those trucks were, white, red, blue and gold with white, red, blue and wood grained interior. I have not found any pictures of the engine in the Papa Truck anywhere but there is some information that says Kenworth stopped with white engines 1975, but I have seen white engines in KW's well after that and engine manufacturers colors before, and this truck is a '76 so the 8V-92 engine in the truck could have been white but it could also have been silver as most Detroit Diesel turbo charged 92 series engines were silver from the factory. The real Papa truck had torsion bar rear suspension and not the Air Glide 100 air ride that's in the kit, the wheels were Truck Mate five hole chromed split rims for the version the kit is supposed to be, a later version had two hole tubeless chromed rims and a slightly different paint job.
Nice. Has Italeri finally changed the old TD120F wich has been in all their Volvo kits since the F12 to a newer more D16 like engine? As far as I'm concerned Italeri's lack of interest to update and do correct engines and drive train for their kits doesn't do it for me and I haven't bought an Italeri Volvo or Scania kit for a very long time.
The version I have of that kit dated 2002 kit #2386 has Keystone wheels, not Cragars...and Magnum 500 style stock wheels. So this kit (at least mine) is exactly the same as the Sox & Martin kit sans decals, with the stock parts from the 1994 kit #7359 added.
The advantage of using Micro Krystal Klear or any other white glue such as Elmer's or any other brand wich is similar is that it's waterbased so it cleans up easy so you will have several chances to get it right, it dries tranparent and it will not effect the plastic in any way. With epoxy you will have only one shot at it.
What about the Korean Chevrolets then...a Daewoo with Chevrolet markings. And for Toyota, they did a pushrod V8 just to be able to compete in NASCAR...they didn't have one before. I for one look forward to these full detail NASCAR Cup car kits and it looks like they have done a decent job with them, the new kits looks to be of todays standards and not a re-bodied old NASCAR kit from the early 2000's.
One thing we haven't touched is that all Mopar cars from 1957 up to 1989 has front suspension with torsion bars, and the old MPC Mopar kits has almost as crude chassis as the Jo-Han kits with a simplified front suspension and metal axle through a hole in the block or pins to attach the front wheels. So I doubt any Mopar kit could have had metal spring front suspension, but I know MPC had some Corvettes with metal springs back when they first came out.
I have both Jo-Han Superbirds and yes they are pretty much the same except for the parts that are different between a Super Stock drag car and a NASCAR car, and the Petty kit also have parts to do a stock showroom car. But the only other 1970 Superbird kit I know of is the Revell/Monogram 1:24th scale kits. The MPC kit was a 1971 Roadrunner with a nose cone and wing to make it look like the '71 Superbird prototype car that never went into production, but as I said, that was a 1971, not a 1970. Here is a couple of pictures of that kit.
The only objection I have on these Revell/Monogram 1:25 Snap Trucks are the rear wheels, they are way too shallow to look right...and there are no sunvisors. Otherwise the kits are quite good...a bit crude here and there detailwise...but good for what it is.