So I swaped a b16 into my 95 coupe and when i went to bolt up my header the flange on the cat was reversed from the header. How can I fix this with out cutting and rewelding the flange or what year and model cat do i have to buy for it to bolt right up. also i plan on getting a apexi n1 exhaust systems so i need something that will also bolt up to that.

 

come on someone please help, i really need to get this fixed