I was told that a '91 Integra LS header would bolt into my '91 CRX with '94 B18C GSR motor. I ordered the header from Massive Motorsports and they are saying that it will not fit. I was told that this was the perfect option, as it has only one oxygen sensor hole or bung, as it is called. I guess it is a bung hole... Anyway, does anyone know the truth about this? Please let me know. The engine is bolted in!!!! All I have left to do is install the axles and finish the wiring...and install the aforementioned header. I did a search and no help there. Please help if you can.

 

Pleeeeease! Someone help me!