ok, ive been watching recent posts and i have gathered that an ITR header is the way to go. now i have an Integra GSR engine swapped into my 1990 CRX Si and the exhaust manifold was customized/modified to fit during the swap. now i want to get the ITR header but im unsure what it will take to get this thing bolted into my car. i think that modifying the ITR header to fit would be a bad idea. i think that the collector end of the header needs to be lengthened (correct me if im wrong) to fit in the CRX and bolt up to the stock position. how can i do this?