Just dropped an LS B18 and 5 speed in my '93 EG hatch.
Which series header do I need to mate my B18 to my EG exhaust?
Thanks, for any help.

 

Any B18 header, or manifold, and you need a Integra converter or test pipe.

 

OP, You don't "need" an integra converter or test pipe, you can go that route but depending on what it cost you could waste more money. You can simply cut the flange off your Civic converter with a bandsaw/hacksaw, turn it where you need it and mark it. Either weld it yourself or take it to a muffler shop and have them weld it, muffler shop did mine for 12 bucks.

 

A 92-00 civic b16 header will work just fine on an ls. Doesn't work an a b18c but a/b are a different story.

 

+1
I have a B16A oem exhaust manifold on my 94 B18B1 LS engine, bolted right up to existing EG civic Cat/exhaust with no modification needed.

 

If you don't live in a state with emissions, forget cutting and tuning the flange on the converter, you can buy a Integra test pipe on EBAY for like 20 bucks shipped, will bolt right up and look way nicer.

 

my oem b16 header matched my cat perfectly.

 

Exactly, Fits and looks like OEM. And they are dirt cheap because everyone ditchs them for, mainly cheap headers. I got mine for free with heatshields.