Just bought everything for 3.73 gears

As for the calculator, I did worse case scenario LOL, I wasn't sure how to calculate converter slip, as I haven't dealt with a build like this before

Cruising is part throttle, it has a Hughes 3500 stall, there will be a little to much slip with the 3.23's I would think

I might just run the 3.23's for the first drive and see what they're like. I really want to get the most out of the car, as it will have a 450ish hp big block in it..