No idea why he pulled the valve body.. I know the TCM is inside the trans but he doesn't mention that. I actually need to pull mine and send it to Russel to have it flashed for a 5.7.. Came out of a Scat. Shifts can be a bit aggressive, unexpectedly, when tapping the the throttle or tipping in a little fast. This is what Russel told me anyway. Not really a big deal.. I'll do it someday. But no, you don't have to do anything with the valve body when using SGA.