Help with tire selection on cuda

I've alway's been a fan of white letter's in. But, your car look's real nice with white letters out. I definately would re-think the sizes for the rear though. Your back end will be too low.

I'm in the same boat right now, I just scored some rallys.

Can you run 60 series tires all around for less sidewall?
And can you run a 225 on a 5.5 rally?