Turning down stroker crank

Apparently I have a RB stroker crank that cant be sold because of the fact it is a Chinese unit finished here in in Texas. I has handled over 650HP with no issue so I am wondering if anyone has cut a 4.15 aftermarket crank down to go in a B block and cut the rods down to BBC. I would get it re nitride.
Is this a cost effective option?
Will the main issue be the rod width difference?