I just had Norwood put a stack induction system in my car. We had a lot of issues to work through, but I probably could offer some advice. The issues you described sounds like your car isn't getting enough gas so look at a possible clogged fuel filter or low pressure in the lines (anything less than 40lbs). Then you might see what ratio your computer is feeding fuel at (O2 sensors are a pain and not necessary). The last thing you might look at is vapor lock in the fuel rails.
I have a TWM Induction system in mine.
http://www.m-realestate.net/AC-Cobra.htm