Damon,
I am currently building a Dart sb for track use only. I will be reinstalling my 3550 Tremec and I can tell you I will have my fingers crossed the first few times out. I will not be doing any Drag race starts and I am a pretty smooth shifter so perhaps this trans will live long enough for me to save for a Jerico rr trans.
HP??? Who knows? more than 100 less than a 1000. Same with torque.
Cranky