I like the idea of an LT1... but of course, my first thought of a similar swap came from my F-Body experience... my V-8 choice was a little new technology and a little lighter weight... my choice was the LS1. I have thought and daydreamed of this a few times... and since I am in the crappy position of NEEDING a new motor, it was tempting to shoot for it... but I don't have any good sources for complete motor and computer/harness package. That of course leads into the transmission problems... my though... why not go with something familiar to me... T-56! How kick @$$ would that be? LS1 (340-350 crank HP/ 360 lbs/ft of torque) with a six speed manual trans... the motor would be lighter than an LT1 and I have LOTS of experience and have LOTS of contacts regarding this motor... now if I could just find one for a reasonable price! lol Ok, I'm gonna quit my dreaming cuz I'm sure its not gonna happen for me anything soon... then again... lemme go chat with a friend of mine... see if he knows where a motor is...
Good luck with your conversion... let us know what stage you are in... if your moving forward or what...
Later!