So far, I have bought one coupe and one roadster kit. Revell IMO did hit a home run with this one but it just barely cleared the fence. The lip on the edge of the body and the hump in the headers and not giving us whitewall inserts for the tires are minor gripes for me. The blower looks too square shaped to me also, but I think a lot of scale blowers look this way .
I had the 57 Coupe when I was a teenager and thought it was a good kit. It came with some nice Cragar S/S wheels. Did it in black with a red interior and only remember having one issue with fit - I had to shave a lot of plastic off the bottom rear of the body to get the bumper to fit properly. I also had built the MPC 63 vette and used the spare dual quad intake setup that came with it on the 57. These were the only two models that I kept after moving out on my own.
Hey SFD, you could use the 340 from the AMT Duster kit. Just change the carb to a 2 bbl and find a correct air cleaner. Not much difference in the rest of the engine from a 273. The 318 for 65 would have been the old polyspherical head engine. Good luck with that one.