Would a 94-01 Integra cat back exhaust fit in a 5th gen civic hatchback? I have a Civic CX which has a narrow diameter exhaust (I think 1.75") and am swapping in a b18. I have the manifold and the LS/RS Downpipe (since the gsr one is too short). I want a better breathing exhaust but don't want an aftermarket one especially since there are several salvage yards near me and I can find one for cheap. Later I plan on turbocharging it and will then get an even larger aftermarket exhaust but don't want to spend the money yet and would probably be too large for an relatively stock NA motor (aside from bottom end mods and clutch/flywheel). So, would a Teg exhaust work?

 

axleback section too long.

 

In my 96 hatch I got the front pipe of the catback shortened and the flange to mate with the cat welded on at the right length.

 

look for a 92-95 si exhaust, will bolt up perfect and is bigger than the CX exhaust