Well I'm getting my rear finally done tomorrow....I went with:

-FRPP 410's
-FRPP Track Loc Diff
-Moser 31 Spline Axles
-Motive bearing Kit

Also going to be running on Mickey Thompson 275/40/17 ET Streets.....

Want to know what psi is good for the tires, and where should I launch around?

Thanks guys...

 

There is no 'golden' tire pressure because The optimal setting depends on the individual driver and his preferences.

HERE is a FORUMLA I use:

(Vehicle Weight in lb/100) + 2 psi at heavier end + 2 psi all around if suspension and alignment are stock.

edit: Then i'd say 25000rpss (street) and 5000rpms (track)