Thanks for the input, I think I'm looking at a eaton 3 series carrier model 19587-010 and a new set of bearings, install kit and a Richmond 3.08 peg. I gotta keep the budget under $999.99. So I'll do what I can with what I got
Insofar as the 3 to 4 series info, this is what I found on Hot Rod Magazine online, "The Three Series carrier accepted ring and pinions that ranged from 3.08:1 to 3.73:1, while the Four Series carrier accepted ring and pinions ranging from 3.90:1 to 6.14:1"
Thanks again,
-Fred