I know this is a dumb question. I read that most B-series parts are interchangeable but i wanted to make sure before I buy anything. I have a b18a1 in my 91 Civic hatch and it needs new headers. However my engine has a b18B1 head on it. Do I need headers specific to the B18b1 or are they all the same? I see some headers (namely the skunk 2 ones) listed as for "vtec engines only" and i was confused because I thought that any B-series header would work. I also read that I'm going to have to cut the crossmember in order to fit the headers. Is there no way around this? Will it cause any structural issues? I thought about buying an aftermarket crossmember but they all seem to hang down really low and cause clearance issues. Mine hasn't already been cut because the prev owners hacked up some headers that weren't meant for the engine and rewelded it to fit. My exhaust is like one giant exhaust leak. Lastly, does anyone know if there is anything decent available for around $500? I have to get my exhaust fixed up for inspection in October so i don't have much time to save. Thanks for any input.