Here's my dilema. I have an obd-1 gsr motor in a 2000 civic ex coupe. It looks like it has the shorter gsr oem header on it with a modified stock integra catback exhaust. Problem is, there seems to be no o2 bungs in the header nor the cat & I'm running a p2t ecu which is obviously looking for the two o2's. I'm planning on keeping it obd-2 & need to pass inspection.

I have a stock header from my 94 Del Sol vtec (B16a3) lying around which does have the o2 bung in it. I figured if I found a stock 99-00 si exhaust including the cat, I can then hopefully bolt it all up. They don't have the same part numbers but does anyone know for sure if a B16a3 is the same length & same flange as a B16a2 (99-00 SI)

Thanks

 

Yes, no?