How low are you looking to go?
I'm pretty sure Ground Force's 2/3 is the only 4x4 Drop Kit available for 4G 4x4's
That's the one I put on my RC/SB absolutely no issues with the 4WD at all.
It's not much lower in the front only about a 1-1/2" , mostly leveled the rear down 3-1/2" and firmed up the ride.
I really like the handling of the new progressive springs, great for cornering. The wider 305 Grappler's sure help too after getting rid of my Good-for-a-Year's.
I did the install with a fully equipped shop at my disposal,
good thing too because the front coilover struts need some special equipment (for Reg Cab kit)
CC/QC's just have springs/shocks up front so it's a simple DIY
If I could get away with it, I'd slam my Ram (my photoshop chop) but we do have snow 5 or 6 months a year so that's not possible.