Stacking aluminum lowering block?

The backspacing on the Bullit's would be pretty good for the 65-67 B body rear axle. And the cop wheels would be a better match for the 8.25, although with a 255 they'll be real close to the springs without a small spacer
I'm going to try it, thanks. If they'll work, I think I have some 1/4 spacers somewhere. If not there is always eBay or Amazon.
Thanks again