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I know a few that have. You will lose some lift in comparison to the 44044 springs. Stock GM springs are flat. 4" GM lift springs give about an inch of lift over stock FSJ springs.
I am thinking you need a full wrap spring if you are going to keep running leaves.
We've been running Chevy ProComp 6" spring as SUA with shackle reversal for years now. Youll have to shave the bushings to fit the Jeep mounts [too wide]. Plus, Chevy springs are approx' 25% cheaper than the Jeep springs. Note: the spring pin is centered on the 47" pac
You will get a lot of nose dive and roll when braking with a rear shackle as the axle is allowed to move backwards, which will pull the front end down. You will also need a front drive shaft with a longer slip and higher operating angle. But it would help prevent bending the rear half of the spring.
I wouls rather live with brake dive than bend leaf springs all the time. Which is why i did flip mine around. Longer travel shaft and high pinion axle makes it easier though.
Blake, any more thoughts on this. What did you end up with and were ya happy with your decision. I’m contemplating the same thing, I have a 81 j10 I want to drop my cucv axles and spring under, with 4” 1 ton Chevy front springs.