does anyone sell performance axles for the swap?
what should it run both stock and with i/h/e skun2 cams, IM, TB and p/p head?
what header and exhaust would i be able to use?

 

Driveshaftshop and http://www.raxles.com make performance axles for b series swaps. Kind of hard to estimate 1/4 mile times since every setup is different as well as driver skill and track conditions. As for a header any b series will work but some do require modification. Use an exhaust system that is designed for your car.

 

how much do you think it would weigh would ~2100lbs. be logical? is it possible to get almost 200 flywheel hp out of a n/a b16?

 

A gutted hf can weigh under 2000 lbs easily. People have gotten 200 n/a whp out of b16a motors. So 200 flywheel is not out of the question.