Hi Bill,
I've built two of these and have three more on the go. They are a very nice kit and IMHO compare well to the much later Monogram sprintcars. Like all kits they do have their idiosyncracies!
Give the driver figure to a kid to play with - it is easily the worst driver figure ever placed in any model car in history - seriously!
Generally, the tyres are rubbish and need to be replaced. I have used Monogram sprint car tyres as a believable replacement, also the Firestones in the Revell Dobbertin series of kits (J2000, Beretta, C4 Corvette pro street).
The Grant King was not the prettiest of sprintcars, especially the hood and the nose. I have one on the bench at the moment where I have grafted the V8-60 nose and grill over the Grant King nose and it is looking pretty cool for a late 50s, early 60s car. Recently there was a good article in another model magazine about improving the nose with the track nose and hood tops from the Revell Rat Rod 29 Model A pickup kit. and the grille from the Revell Offy midget.
THe GK hood is very level and parallel - if you file the lower edge down towards the front to produce a tapered effect it will improve it out of sight!
The chassis is a bit fiddly but the jig works very well and if you take your time it comes out nice and square and looks great.
The one piece tail is magnificent and has a separate two piece fuel tank to fit inside- accurate for the era I believe. However there is no evidence of a fuel cap or filler.
Engine is not bad but the headers have a strange arrangement where one port in the centre of the heads opens into two pipes - very odd but on the other hand isn't screamingly obvious till someone points it out.
Biggest failing in my eyes is no rollbar to go behind the seat. Fact is, the old Monogram Hot Shot midget is the only open wheeled dirt car I am aware of that ever had a proper roll bar. This omission would be correct for the real GK but If you leave the cage off you are going to need to make a rollbar. What makes it worse is that they are so awkward to make and keep the right and left hand sides symmetrical, or maybe that's just me.
Hope that helps Bill. I have had a variety of releases and they are all basically the same under the skin witt minor cosmetic changes as described in the earlier posts.
Cheers
Alan