I’ve cut many cranks down to SBC LJ crank size. I’ve had a few turned to SBC SJ size if it was an aluminum rod build.
I turned every BBM crank down to 2.200 (BBC) because unless it’s got a blower on it they are too big. And it needs to be over 4k hp because AFAIK no one uses anything other than 2.200 rod throws on anything.
If I didn’t already have rods I’d turn my crank to 2.100. I’ve run my personal stuff at .030 Chrysler size which is .005 under Chevy stuff and beat the crap out of them.
I’d run that crank so fast my shorts would have to catch up.