The turbo mitsus do NOT use the same tranny/bellhousing. The non turbos use the same tranny that is in the neon the dodge tranny.

The exhaust is on the front of the non turbo mitsu head it is mounted opposite of the neon.

As far as the neon aftermarket about 5 years ago it consisted of the iceman intake and that was about it. It took a while for people to realize the potential.