Follow my 1967 Dodge Dart Restoration
I read through your thread and I think you have a great project. As I read through the thread a couple of thoughts popped into my head. First: wouldn't a Viper bell housing be a better starting point? I don't know how hard it would be to find one though. Did you decide to use the LT1 pressure plate because of it's compact dimensions? I would look at the presure plate and disc setup used on Vipers.
Just did a quick search on Viper bell housings and found several years for $103.