@Leif_Ram2019;
1) I'm a little surprised this lift gets you a true 3" of lift. I was under the impression the Rebel and ORP trucks got their factory extra inch of height from a 1" longer spring. Did you, or the shop, do much adjustment with the coilover? It's hard to tell from the pictures, but it looks like there is a large threaded adjustment section. Was the shop aiming to get you a certain height, or just to make you level?
I netted right around 2.5-inches of lift over the factory Rebel ride height so if you round up, you have a 3-inch lift (marketing magic). The increase in tire size brought the truck up to a full +3-inches over a factory Rebel setup.
There is some thread remaining for additional tweaking of the ride height. I asked my shop to try and retain about 1/2-inch rake with the topper installed to help compensate for any additional loads in the bed. I am confident I could dial in another 1/4"-1/2" of lift increase but that would make the truck almost exactly level and maybe cause slight degradation of ride quality (I feel I am already at the cusp of having decent ride quality vs. being noticeably stiff). However, after settling some, I noticed that my passenger side is tad lower than the driver side, so I will probably use some of the remaining thread to make the side to side adjustment.
2) I'm curious why you chose the lift with the 2.5 Coilovers vs. the ones with the remote reservoir. Sure, the latter is more expensive. But not much more expensive considering the overall cost of these bad boys.
Good question; I went back and forth on this actually as I have opted for the remote reservoir (Fox/King) systems in the past. While I am sure that I probably off-road more than most Rebel owners, the fact is I rarely abuse my rigs on sustained higher speed desert runs (maybe short runs) and/or extreme rock crawling that would throttle the shocks a lot. In those cases, I would really benefit having the remote reservoirs. So this time, I decided that the better value would be having a higher quality base system and not pay for the entire show. I might regret that decision later if I find myself really wanting to do something more technical or at higher-speeds, but with my decision to go more of the slower speed "Overland" style build (i.e., bed topper), I think this setup should be fine (subject to change later...lol).
3) I saw a disclaimer associated with this lift that said, 'can not use OEM wheel and tire'. Do you know why that is?
Lift manufacturers always want to make sure that any installed wheels won't rub or bind with their installed products. The base Fabtech UCAs are not adjustable and increase the caster, so to ensure clearance within the wheel well, and assuming you want a 35-inch tall tire (with corresponding tire widths up to 13-inches) the wheels cannot exceed a backspacing greater than 5-inches of back spacing. My wheels have 4.75-inches of BS so they fit within that spec.
edits: grammatical correction