8hp70 transmission controller?

I suspect that with a Mopar PCM, you don't have to do any of that. Maybe @Dantra can confirm that the valve body didn't need to be removed with his setup?
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.

The 8HP can be tuned but does require special software.

Keep in mind the Aussie guys are nuts! LOL.. They like drifting and burn outs. So what they are building, doesn't really fit into our world.

Also, most of the companies offering trans controllers are just selling you the SGA kit.