ok i have an b16b and i had bought DC sports 4 to 1 header for a 99-00 Si...onlthing the left side wont bolt up...oil pan is in the way..anyone know wat header i need to use that will fit...i was thinking of 4 2 1 header,,2pcs. maybe it will fit if not please help and tell wat i need......
it wont fit for the same reason the b16 header wont fit a gsr/itr motor. the b16b shares the same block as the gsr/itr, but a destroked version. you need the header for an ITR
well since he has a civic, he will want the ITR one becasue the GSR headers are about 2-3 inches too short. it wont reach the cat but 4-1, 4-2-1 doesnt matter. as long as it is made for an ITR
get the one made for the motor in this case ITR, since they do infact share the same deck height and if you can go with a 2.5 inch collector.