You can go over the axle. Take a look. My exhaust fits perfect ( no contact anywhere ) and sounds sweet with the RaceMagnum.
All state laws are the same on the axle thing the only stipulation is the there be 12" of pipe after the muffler and must exit at the axle or to the side behind the rear window.
Also beg to dif on the flow thing with over the axle and dumped on my buddies car taking the tail pipes off (3.5" System) he picked up 22hp on the dyno at the rear wheels. This is do to less back pressuer do to a shorter distance. Also netted a noticabley faster turbo Spool up again do to less bp.
I also saw a gain on my old chevelle with dumps and no turbos I picked up 3/10th in the quater when we wacked the tails and went to dumps on a 3" true dual set up. BUSTED! Dump at the axle is better for performance
That exhaust is beautifull ! good work! That got me thinking. Wouldn't dual 3" exhaust out flow a single 4"? I mean, dual 3" = total of 6" right?
In 1997 Ford F150s had side exhaust that exited in front of the rear tires on the passenger side.
Do you have a pic from behind the car how it exists? I would love to stuff that in my car but I don't think it would clear my Wolfe Bar.
We had dual 4 inch exhaust on Nelson Hernandez's twin turbo car back in 1996-1997ish. We built the whole thing out of mandrel bent pieces. There used to be some pictures of it on GNTTYPE, they're probably long gone. Ken Mosher took them, maybe if he sees this thread, he can see if he still has them.