Hello all, I can share with my experience on this topic so far. I have a 21 Lariat, I purchased some take off wheels/tires and the seller included his (200 mile) front and rear spring/shock OEM Tremor suspension. I removed and sold my OEM Lariat 18" wheels, same exact design, just a brushed finish with grey painted inserts (44 offset). I measured my Lariat (non FX4 package) prior to removal and install of the Tremor front spring assy. After alignment I was exactly 3/4" taller from my previous measurement. Once I swapped the 275/65-18 Wranglers for the 275/70-18 Generals on Tremor wheels (also 44 offset) I gained another 1/2" height, NO difference in width.
The ride is still nice but with slightly more height and less washy in turns and straight line driving bounce. I didnt opt to swap out the rear 2" blocks to avoid the silly rake, which I still have but its very slight.
I dont agree with the wider width being my wheels were exactly the same offset from Lariat to Tremor, both tires were 275's, the only thing was height 65 to 70's, that was 1" taller overall height. As for the knuckles, I also looked into that and from researching via VIN numbers to part numbers, i came up with the same part number for either a Lariat or Tremor.
So, the best answer I could figure out at that time for me was an easy spring/strut swap out as an assembly.
I was intersted in the Fox set up but, I wasnt happy with adapting for an earlier version for my '21. After driving this way for several thousand miles, I am content with the OEM Tremor setup, although the rear shocks are pretty much the same as I had from my Lariat, I didnt notice any difference at all. I would like to swap to something less bouncy but do not want to have the rears out do the front. What I should have done was just swap the OEM front strut for something else onto that Tremor spring, but thats still an option down the road for me.
I will see how the newer Fox updated design goes when others start to chime in on their results.
