Some spacers for the 2/3 apply piston, some new springs and spacers for the valve body and a new spring for the governor. It was not hard to install in my van, just messy because some of the fluid missed the bucket. You have to pull the bottom pan to put in the 2/3 piston spacers and the new filter and pull the side pan and valve body for the other stuff. The governor is the unit where the speed sensor is and it is the easiest part of the kit. It helped my transmission because it was slipping into 2nd and 3rd really bad and with the Caddy v8, it just could not hold up to full throttle upshifts. After I got the shift kit installed, the torque converter went bad and I ended up replacing the tranny anyway
Since the new tranny is working pretty good, I am not messing with it for a while longer.