Currently have a 4in crown drop spring, which rides ok but want to go a little lower. Already have the lower arm kit, sway bar kit, shock relocation and free travel. From what I could search I see mixed opinions about 5in Tahoe springs, and using TrailBlazer springs.
*DISCLAIMER: Due to the possible controversy, the following is not intended to be suspension advice. It is only sharing of my experience*
I lowered the rear of mine about 4.5" using stock rear coils from a Jeep TJ. I dug them out of a friend's scrap yard pile cuz they looked just like regular drop coils for our rigs, so I had to try them. By themselves, they ride great, but are a little too soft for my liking. I installed some Air Lift 1000 bags and, with 12 psi in them, they're perfect (IMO) for daily hooning. But, they lift it about 1/2" for a 4" net drop. I plan to cut off a coil, or whatever necessary to drop it an inch. Based on calculating spring rates from the wire and coil measurements, this would also increase their spring rate to about what the factory rate is. So, I wouldn't need any, or very little air in the bags, meaning no loss of drop, factory load capacity and feel.
I've been running the TJ coils since February of '20. I've been to Florida, Texas, and Mississippi a few times. I towed a 1,000 lb. golf cart back from Tampa (750 miles one way) with the fam and all their luggage on board. A few months ago, I towed a Mitsubishi Outlander on a dolly from New Orleans (110 miles one way), cruising I-10 at 65 the whole way. No problems at all. My opinion is that they're tough to beat as a 4"+ drop spring for the price. I see them fairly regularly on Facebook Marketplace for $10-$20 for the pair. They're essentially worthless to anyone with a Jeep once they're removed for lifting. I'm sure the majority are tossed straight into the trash at Jeep/4WD shops. I actually picked up a second set for $20 to experiment with so I'll have my current ones in case something doesn't work out.
Oh, you'll need shorter shocks in addition to the extenders. Belltech 2410FF would do. I'm running Bilstein 4600s left over from a Jeep XJ project. They're the same dimensions as the Belltech 2410FF, but required modifying the mounting eyes to bolt them up. Again, were another experiment with stuff I had on hand that worked out so I left them.
