Re-did the whole exhaust on the ZJ. I still need to sort out a minor floor pan clearance issue with one of the mufflers, but that should be easy enough. And I'd like to get the end of the tailpipe tucked up a bit tighter. Other than that, it came together nicely. It's tucked up good and tight to the floor pans (lowest point on the mufflers / pipes is about 1.5 inches below the "frame rails").
Best part is, it's quiet. A bit quieter than the previous setup (which was a cat, a resonator and a large 5x11x22 Magnaflow muffler). New stuff is a cat and 2 medium size Magnaflow mufflers in series (a 4x9x18 and a 4x9x14). The bit of drone the old setup had is totally gone. It's as quiet as stock inside. From the outside, it's stock-ish volume or a hair quieter (compared to stock 5.9 ZJ exhaust) at idle, pretty quiet under load too. But it sounds good. I'll have to grab a video at some point.