ok i broke my posi unit in my trans am this week end while at the track. I was wondering which is the best unit to replace it with. it was a torsen. but im trying to figure out which unit would be better since right now i dont have the money for a s60 or a 12 bolt. i know that they have auburn and some other ones out there. let me know which i should go with. thanks
-Tony

 

Detroit Tru-trac from Summit. $365 and much stronger than the factory diff. Works like the factory torsen except better.