Joined: Apr 2018

Posts: 25

Likes: 1

From: Greensboro, NC

Had 6l80 out repaired and upgraded. I trust the shop- they do all of our trans rebuilds for our shop. I asked for a 3200 stall with it, and he said a local guy built it from Sonnax parts. The receipt reads C/C 6l80 10” 3200- JMBX. I googled the JMBX and can see it is listed as a variety of Sonnax kits. Anyone have experience with this, reviews? Or is it COMPLETELY about the builder? Are these quality parts?