The time has come to start getting ready to swap my TH400 for a 2004R. I received the 2004r with the car, and have zero history on it, other than it is obviously freshly rebuilt, and came from a Oldsmobile. What needs done to get it to hold up to my mild 455 in a street driven 69 Skylark? The car will likely never see anything close to a drag radial, but does have a set of 3.55's and an Eaton Posi on the shelf for the chevy 12-bolt. Is there a good site to read up on them?