Question, and I recall reading a somewhat similar thread LONG ago, but couldn't find it in search.

Found a good deal on a header made for, and currently installed on, a 94 GSR hatch.

I have a 94 LS hatch.

I have a RSR cat-back exhaust system.

The header is also a RSR unit.

I know the cat is shorter/longer on the GSR; it's a different size than my LS cat.

What do I need to do to fit this header onto my LS? The unit should bolt-up to my head just fine, but it's the cat that I am worried about.

Suggestions? Remedies? HELP?!?

Thanks.