Don't know if there has been a discussion about this but here goes.
My main question here is the difference between 1/24 and 1/25 scale. I know 1/24 is bigger than 1/25 but by how much for actual parts. I find 1/24 engines are too big in a 1/25 kit. Also, engine parts don't seem accurately compatible. One case in point is wanted to use tunnel ram intake from 1/24 '57 Chevy kit on 1/25 '57 Chevy engine. Manifold is too long. And how about tire size differences, particularly aftermarket.
Anyway, interested in comments.