Srt-68 Barracuda

5.7, I'm watching your build very closely, I am doing the same thing to a 63 Dart. From what I've read, most builders have not had any luck using the new NAG transmission, not really sure why. I have a feeling if anyone can figure it out, it will be you. Do you have a backup plan? I was planning on going with the 4l65e even though they are crazy expensive, but if you work this out, you could sell kits, or at least instructions on how to do it. Good Luck!!