The OME lift is springs and shocks, it's not adjustable.
If you want an adjustable coil over, you need to get Kings, Fox's, Icons, etc... You might be able to get 3.5" of lift by cranking the preload way up, but I wouldn't advise it. The ride will be super stiff, and then again, you run into extreme CV angles.
Really the right way to get any lift above 3" is a bracket style lift that drops the front diff down.
You can crank up adjustable coilovers Like Fox, King, Icon, Sway a way/Camburgs, ADS to any desired height that the ball joints will allow. To joke around with a co worker years I cranked my foxes up to get about 6.5in of lift with just uca and 2.5 coilovers. But only to mock him and his 6in lift. The higher you go the worse the ride quality! Typically I recommend 2in of droop travel. This allows the shock to work correctly under any height. Basically if you measure from fender to top of tire and then jack up truck from frame and the measurement increases over 2in your good. OME set up is nice but not ideal due to spring loads placed on shock, and these oem style shocks have a tendency to break at weak points. I always have sales on coilover shocks from the big brands and can help you out with any further ?
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