hey people! i here a lot of crap about headers for the b16 in a civic/crx ef.. and when i call shops- they dont want to help. what is the difference between a gsr(b18c) header and one from a dohc del sol or new 99-00 si?? i mean, are the bends different or the port holes a couple of millimeters off? any ways-any help would be nice.. later!