I'm just finishing rebuilding a 7.5" series 3 with 3.42 ratio. The problem is I know I'll blow it up again in about three months. My question to you elky guys is where can i find an affordable 8.5" rear for a GN or campatible g-body to put in my Camino? I only found two online for $1,200. They don't have to be posi, I can do that. Thanks guys!