I did the currie 4” lift with Rancho 5000s shocks that I installed myself with basically the same purpose for my jeep that you have. I also have 33” tires. No need for an SYE. Adjustable trackbars were super helpful during the install. I installed it back in January and have had no vibrations and have gotten up to 85mph (texas highways) Here is a side view right after the lift with 33s for reference.
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