What custom backspace would you order?

Ordered some 17x8's with 5.5 backspace on the front and 4.5 backspace for the rear. It will take a few weeks for them to be built, but hopefully they turn out okay. This is going on the 73+ Disc Brakes on the front and factory a body 8.75 rear with axles from Dr. Diff.

That will work front and rear.

Only thing you might run into is if you run a factory profile 67-72 wide front sway bar. Hellwig and Hotchkis front sway bar have room for larger backspace rims.

If you run into any rubbing in the front it will be the front bottom fender wheel lip. Decent chance you'll have to roll/fold that a little.