5.57 Gear for 8 3/4 Racer In Need!!

Looking for a 5.57 ring and pinion for a chrysler 8 3/4. Doesnt matter if it's for the 742 or 489 case. Will buy complete third member or just the ring and pinion. Will pay via PayPal asap. Thanks!!!

I have a ring and pinion. Don’t know brand but looks to be in good shape. Where are you located?