Late B's have inner fenders in the front that unbolt. now, while they're part of the frame, you could offset that with a roll cage-style front structure. man you could fit some tires then

I'd agree with B body, just because of track width alone. Forget the aluminum smallblock.

Here's two interesting possibilities. Indy now makes an aluminum B block (i.e. 383/400). Man I want one of those. Or an aluminum 225, set back as far as possible

ahh... if only I were rich

Check out this B body 4 door autox setup, with tire test
https://www.youtube.com/watch?v=yfVC2qOJ_lU