I'm contemplating a Rubicrawler as well! Couple questions:
1. With my eventual planned 5.13 gears, my crawl ratio would be approx 158.5:1, is this excessive for an auto? (I've had a manual rig with 117:1 crawl ratio and loved it but, no experience with an ultra low slush box) Do those of y'all that have a Rubicrawler find yourselves utilizing the full low range very often? Or the 2.72:1 low very often? (in lieu of stock 4:1)
2. How tough is the install? (I'd like to be able to put it in myself, if possible)
3. To be quite frank, have you found it to be a worthwhile addition?
4. To those with stock Rubi lockers, what have you done toward getting the Jeep to allow locker engagement when the Rubicrawler is in low but the stock t-case is not? The total control locker bypass wiring or...?
I have one in my JK Rubicon and I think it is my favorite mod so far. It is nice to have the option of 2.72:1 , 4.0:1 and 10.88:1 I have 5.13 gearing in mine also. I use all of the options on a regular basis you can select the ratio you need for the terrain you are in.
07 Unlimited Rubicon, 4 link rear, 3-link front, 37x12.50x17 BFG KM2's, Dana 60 rear, Warn Powerplant, Icon Perfromance coilovers w/ res in front Icon shocks w/res in back, 5.13Gears, Rubicrawler, RCV axles, WTO hydro assist, Anitrocks front and rear, Black Rock Bead Locks, TF speed bumps on all corners.