I tried a 87-93 mac catback on my car. the hangers were too short at the muffler, so it pulled the pipe up into the floorpan of the trunk and leaked a little at the collector. im sure if i would have lowered it it would have cleared fine and sealed up. it also seemed like the hoop was in a little different place, so i dont know if it would hit the axle or not, but it will fit with some tweaking.
I tried the bassani x off my fox on my 95 at first and it fit, but it fit kinda cockeyed, so I doubt a fox rear section would work. I wound up having to get another x that fit my year.