She's hurtin. Shifts fine on the street but I think it'd be wise to keep her off the track. I'm thinking about either having my tranny built or buying a new one. Best I've come up with so far is pro motion performance. They sell a built 3650 that can handle 700hp for $1700. Any suggestions?

 

If you gonna buy one, Id go with the TKO-500 or TKO-600.

That being said, you can probably get your built for less then it would cost to go new.