http://www.offroaddesign.com/catalog/Zero%20Rates.htm
thems should work with 63s in the rear. you have options bestgen 
It used to be a "used car" and now they are "previously owned" to make them sound better.
It appears that what used to be a "block" is not a "Zero Rate Add a Leaf" that is now suddenly acceptable for use in the front? I thought that was always a big no-no?
A 1 inch block in the rear of mine could shift my wheelbase a bit...I wonder if it would cause a major issue with my driveshaft length/angles...
Logged
1989 4Runner: Dual Ultimate (Inchworm front & Marlin 4.70 rear), Marlin Twin Stick, 1200-lb clutch, 4.88 R&P, Aussie Front, Detroit rear, 30-spline Longs, Long hub gears, ARP hub and knuckle studs & 35x12.50 Cooper STT PRO tires. Marlin rear bumper & sliders. FROR front bumper. SAS with Alcan springs & Rancho 9000XL shocks. Budbuilt Bolt-on traction bar. Custom Interior Cage by Those Guys Rod and Customs.
Moab Tested & Rubicon Approved
