Quote Originally Posted by Chri$09 View Post
well i don't know there isn't much out there right now for a 8.6 rear. if it was a 8.5 it would have a lock rite in it. ive had one of those and 35s and it did fine! and gave ya that old clank clank clank around corners lol

but anyways its a 4.8 and and 4L60... i looked for the servo locations and couldn't find it the other day at a glance under the truck (i scratched my head, hmmmm).

what headers are yall runnin on these 07+ trucks?
8.5 and 8.5 are basically interchangeable.