I have looked EVERYWHERE! and i can't find a answer! Where can i get a full exhaust for a 91 EF hatch? It has a straight pipe and i need to pass emissions.

 

Buy any cat back exhaust you want.
Go to a muffler shop.
Buy a catalytic converter and have the muffler shop put it together.
It's really not that hard.

You didn't fill out your profile with your location so I'm going to assume the worst that you state requires NoX smog testing on a dyno.
Do your homework on the catalytic converters. There are different constructions (honeycomb, ceramic plate, etc).
Cheaper construction and materials will give you poor SMOG test results.

 

I live in washington state and im not looking to spend that much for a shop to do it. I'm going to do it myself.

 

Can you weld?
All you are needing to be done is weld flanges on the new catalytic converter so it bolts up to the cat-back and to your exhaust manifold/header.

Exhaust leaks are the devil to passing smog checks

 

My uncle can weld. and he said he would do it for me. I just need it to pass so i can get the car into my name lol.

 

Yonaka Catback
$260 shipped from most places
Full stainless steel catback that is NOT loud, fits great, looks great, and sounds even better!

 

SRS exhaust (ebay), picked up for 150 sounds good and actually fits correctly, and magnaflow cat 65 bucks like summit and jegs... its not hard