You aren't going to find a lot out there for the m42/m44 without dropping some real coin on it, the engine comes from BMW very well tuned, with good headers. Get a ECU chip, exhaust, intake, and call it a day.
I do know that Downing atlanta makes a Supercharger kit for the car, I thought Shrick did make a cam for it as well. Metric mechanic will also sell you a built motor or the parts for building your own, might want to explore those options.
Originally Posted by yammahamma
If I wanted to date you, I would have bought you dinner first.