I'm looking for a rear end gear set around 4.80 or so, for a Mazda RX7 Turbo II rear end. MRacing beat has a 4.30 only for turbo. i know that the N/A has a 4.8 but from what I understand it can not handle 300hp with out breaking.

So i need your help to find where I can get a rear end.

Let me know.
Thx