My experience with Italeri cars, particularly classics, has been somewhat mixed. Some classics like the Rolls Maharajah and Mercedes 540K had good detail but 2-part plastic tires. Their Mercedes 300SL Cabrio is probably the best overall 300SL kit in both 1/24 and 1/16. However, they used its main body shell buck for the Gullwing versions without taking into account the differences in the shapes of the fenders and grille, so the Gullwing is a bit inaccurate.
I grew up in Tulsa and was fortunate, as a teenager, to have Glenn Pray give my Dad and me a tour of his plant. At the time, his primary production was an 810 Cord replica (and actually 8/10 scale) made of a material called Royalite; dents and dings would pop back into shape by applying heat (supposedly). You should have seen his salvage lot with original Cords, Auburns and Duesenbergs. He had just restored a Duesy SJ, a giant car, that he let me sit in.
If you haven't followed this all the way through, Harry responded to my request to build the car from one of my favorite movies, "The Wings of Eagles," with John Wayne. He not only nailed it, he built the best Stutz Bearcat model I have ever seen, in any scale, and starting from pretty weak kits like the Aurora curbside and Lindberg racer.
I think Hot Rodding magazine probably digitally removed sponsor stickers (copyright issues?) after they shot the car in the studio, and that's why it has such a Photoshopped look. Here's how it looked at the 2011 SEMA show. And if you compare the interior shots between the link in post #1 and the one below, it looks like the magazine also deleted the logo on the driver's seat. http://mustangsdaily.com/blog/2011/11/03/sema-2011-filip-trojaneks-1966-widebody-mustang-race-car/
I got some nice tires and wheels made by Le Mans Miniatures for slot cars; in my case, I got excellent piano wire wheels for the very good 1/32 Bugatti T59 kits by Pyro and AMT. This source has a few, but look around at various slot car parts suppliers: http://www.ncphobbies.com/slot-cars-1/32/
Also available in a Monogram metal body version. Just keep checking eBay from time to time and you may find an acceptable price with shipping. I don't know if it's the same as the Testors / Bburago metal body kit.