i picked up another 2004 4l80e, and this time i might try the TP man shift kit
was wondering what the insts. looked like, and the mods-can i keep a lockup converter, and my speedometer sensor(i notice they give you a plug for the conn.)
didnt have a lot of luck with the transgo kit, and dont want to cut up another v/b, lol

 

You can leave the pass-thru in place to run a lockup converter. The plus is optional. Are you wanting just a Manual v.b. kit or a t-brake also? The speed sensor is not changed from its external location.

 

man shift only

 

just leave you wiring in place if you want to run a Lock up converter. Also if you decided to go computer controlled later on you can use the same v.b. there is no drilling required.