Quote
BEWARE THE SUPERLIFT SPRINGS FOR OLD 4RUNNERS! THE 3 DEGREE SHIMS THEY COME WITH DO NOT WORK FOR THIS APPLICATION!


That is typically the case, since the spring maker can't know ahead of time what vehicle the springs will be going on. Since those would fit on a 4Runner or SWB pickup or they could also go on a long bed or Xcab pickup with a 2-piece driveshaft and center CV joint.

Best option is to measure your drives haft angles *prior* to lifting it (that way you know where you started and and what worked) and then measure afterward and see what changed:
http://www.4crawler.com/4x4/CheapTricks/Driveline-101.shtml#Single-Cardan-Measurements

And then if you have vibration issues, you'll know what needs to be fixed.

r.c.brown@ieee.org
TruckEditor@tlca.org
Project: 4Crawler
4Crawler OffRoad - 4x4Wire discount code