I'm just assuming an old GT3 or GT2 car would run circles around a GT4 car and that an older used one would be the same or cheaper than a new one.

I just see race cars as shells. Doesn't matter what they look like outside, the interiors are just metal, plastic, and wires. New races cars don't offer or do anything than the old ones don't, for the most part.

Just seems like with race cars you're better off buying the highest performance one that you can afford, and that's probably a used one.