Quarter Mile Gear Selection

I suggest the 4.10. Here's why:
A 512 stroker will have monster torque. The 4.10 will soften the hit a tad for better hookup. And as others noted, spinning that long stroke to 7500-ish would make me nervous.

But the real reason is I did this very thing with my avatar. Car had a 4.56 when purchased as a roller. Built a 408 for it and took it to the track. Tire is a 28" slick. Engine was out of breath at the 6700+ rpm it wanted to run in the 1/4 mile. So I switched to a 4.10. I was surprised...the 60' stayed the same, the 1/8 et stayed the same, but now I can run it out the back in the quarter at 6200 and not worry about it (as much lol). And the 1/4 et is faster.

You've got a LOT more motor than me so I think yours can easily handle the 4.10 with similar results!