Originally posted by BustedLX
I don't know if the F22's header will bolt to an H22 but it will to an H23. The H23's aftermarket headers have a slightly larger collector which helps the engine operate better at higher RPM's.
which is why the 60mm collector on the jdm h22 header makes it so damn good.
if the h23/h22 header was interchangeable then the greddy 92-96 lude VTEC header would be listed to fit the h23, but it's not.