That's what I did when I did a trans flush back in the day. I'm not sure if it did the cooler or not but it pushed out a lot of dark fluid. How hard was it to do your trans rebuild. I'll be doing it in a couple of months and was curious if it's as easy as it looks in threads. I would be getting a TC and VB from goerend because I've heard too many horror stories about shift kits. I'm actually looking fwd to it, people with build trans say its the best upgrade they ever did.