Here are some tips on 4th gen 4Runner and FJ Cruiser body lift installations:
Best time to install the steering shaft extension is while you have the body raised off the frame for installing the lift blocks. This will ensure the most working room for installing the extension. Be sure to mark both sides of the steering shaft prior to separating it so that you can align it after the extension is installed. Also, you may want to use something to keep the steering wheel from turning while you have the shaft separated.
If you find there is not enough clearance to fit the spacer in place, try lifting the driver's side of the body up again (like you did when you installed the body lift blocks).
Here is one thing you might run into after installing the steering shaft extension:
Hey, I just installed this steering extension and have a problem and can't figure out what I did wrong. The VSC is constantly going off, I can't exceed about 10mph before it goes off. It is not drivable at the moment. Any ideas? That is all I have done in the last few days, so I must have done something wrong there.As it turns out, there is a sensor in the steering wheel that is part of the VSC (Vehicle Stability Control) system. It is a pretty easy fix, look up the details in a copy of the Factory Service Manual or on-line:
Sometimes you can get an increase in VSC sensitivity after installing a
lift of any sort on these vehicles. If yours in on the very edge of
calibration, a body lift may push it over the edge. You have to do a
"zero point calibration" on the VSC, it takes a few minutes
and a 4" length of wire. Easy fix, just very annoying to figure
out.