I have a 93 honda civic eg & just swapped the engine to a b20b4 block with b18b1 head. I have a factory eg exhaust, but the headers i bought have different bolt patterns(waste of purchase). I want to just go ahead & replace my whole exhaust all the way up to the headers. I know b18b1 are from integras, but will an integra complete exhaust fit my eg? Or what type of exhaust w/ headers will fit in?

 

Anyone?

 

You'll probably be better off getting a header that fits the head then having a muffler shop fab you up a custom exhaust.

 

The header fits the head no problem, but connecting to the catalytic is where the problem is. Ive seen online some say a 94 integra midpipe fits, it's that true?

 

Do some searching online for images of the flanges at the end, chances are, they'll just be at different angles... if that's the case, get what you want (so long as the collector diameter is the proper size) and just have a shop cut/weld it in place...
Trust me, it's easier than shopping through poorly documented sites for the exhaust you want.

 

But from what car exhaust would you recommend i get?

 

Unless you're doing something to the car that requires more flow...
Stock.

 

I thought my setup would require some extra flow, that's why...

 

2.5in (IIRC that's the default for most B-series), unless under boost pressure, you're fine.