So… ya it’s the 1st gen b16A with an airmass header. dunno if it was made for the actual b16 or what, but anyways. it’s got a pretty big bang on the lower runners but it must do for now. after getting custom exhaust redone nad later on when i buy a new header, are all b16A headers the same in size/length? meaning, will I ahve to extend or shorten the ehxcaust pie to accomodate the new header or will the new header be a exact swap with my old so I can sue same flanges etc? basically. are all B16A headers same length in the end where it meets the exhaust pipping?