the exhaust is the borla climber, https://www.borla.com/jeep-wrangler-...haust-systems/
I don't think I've driven it over a hundred miles or so since putting it on. More noise, but not bad. I do have the tub covered in blizzard skin heat and should shield. keeps allot of the noise down.
As for the lift, I started with Synergy 3" springs. I got about 5" of lift, way to much for my liking. I then tried the OME springs, way to much lift again, I also didn't like the size of the rear spring compared to eh synergy. The OME springs are shaped like the OEM springs, egg shaped. The egg shape will hit other components...
I ended up with 1" synergy springs, which gave me about 3" of lift. I had similar issues with springs on the 11 JKUR I had, more lift than advertised.
I also think the UD60s have the spring perch about an inch higher than the stock axle. I was always going to go back and measure it, but never did.
As for side load or the low lift height, the big issue I had in the past was breaker angle. I expect some of the same with this one. If and when I find that issue here, I will do one of two things. 40s, to get it higher or a flat belly. The flat belly would be fairly simple, I would just add an Atlas or some other tcase movement to try to get it up higher. That and a rear GenRight tank.
To me the issue isn't the frame rails, its the stuff hanging under the rails.
I will save my money on the bolt on belly pan upgrades and do a larger modification if 40s doesn't resolve the issue.
The trails I am on in the South East are not the same as the ones I was on in the west and a different vehicle build is needed. That is for my expected use out here. I just wanted a drive in and out rig, not a rock crawler, I have one of those. I don't use it much here, which is sad, it sits in the corner of the garage...