When you swap a B16A into your EF, the header is about 3 inches too short of the catalytic converter and then flange needs to be rotated to bolt up.

My question is, if you by a DC Sports (or other brand) B series header for your motor, does it correct the 3 inch gap and flange position? (This is provided that you are still on the stock EF exhaust)

If it does, WTB DC Sports 4-2-1 for a B series

 

What mount kit are you using?

 

If youre using hasports you could add the 1-3 inches to your cat when you rotate it and be done.. I think you will come up short with any b-series header..

hth

 

have the cat taken off (by an exhaust shop) and moved up and rotated, then have piping extend to the rest of the exhaust