Well, it looks like I pushed my rear axle back too far. After some driving and testing and flex testing the suspension out in the field so to speak, I now know this for a fact. The spring perches on the unibody are too far forwards compared to the axle to allow the coil spring to compress properly and safely. Under more than half flex the coil springs start to bind up on the mounts themselves and shift around and compress weirdly. Approaching obstacles like steep ditches and the like head on is fine, but trying to crawl though things at an angle gets sketchy. When I parked on top of a ditch and hopped out to look at what was going on a couple of days ago I was truly scared I was going to explode a coil spring. So, I think I'm going to have to move the unibody spring mounts backwards. I toyed with the idea of converting to coilovers, but I've ruled that out due to cost. I could also have the driveshaft shortened, but I really don't want to pay to have my driveshaft modified again. I have seen that people are happy with the land rover coils so far, so I am considering doing that conversion at the same time just to get rid of my chopped jeep springs but we'll see about that. Hopefully I can get on this soonish depending on work and weather.
In much more interesting news, I picked up 2 Chevy 10 bolt axles out of an old suburban a few weeks ago for a steal. They need some TLC for sure, and the front axle will need to have the diff flipped to the drivers side etc etc... Not saying it will happen soon at all but I think I've started collecting parts for an SAS. I probably will not use the rear axle but I couldn't take one without the other, and you never know.
And Swamp Thing broke... it needs a bunch of welding repairs but the mud season is done so that's low priority atm.