hi TinCup, nice looking Dart, and HEMI too. I also have an early A Body, 65 Dart GT, but I'm going with a Big Block, 400. As soon as I figure out how, I'll post some pictures on here. I also have a little experience with putting 5.7's in hot rod projects. I have a 33 Dodge P/U on a t-bucket chassis, 5.7/545rfe. When I built my 33, there was NO ONE building a harness that would control the German Auto Trans from the Challenger/Charger/Magnum. This is/was a shame as the German is a bit stouter and considerably smaller. Using the 545rfe, I have quite a large tunnel in the car, would be nice to have that foot room back.
If/since you are this far into the HEMI Swap, I assume you know this already or have found someone that has started making a controller/harness for the smaller, German Trans.