whoa, fram filters are a bad idea. Any filter that is made from cardboard is a big no-no in my book.
Sorry, I was out in space there for a while. I actually considered doing a D16A6 or Z6 manifold swap onto mine, I was thinking about that. The intake tube could probably fit with some cutting and a battery relocation, just the short versions though.
I think options auto salon (
http://www.optauto.com) sells both the DC header and short shifter.
Where in the hell did you find a Mugen kit?!