Hey guys,
I just got done with a James Duff 2" kit - which was installed with a SkyJacker 4" Suspension Lift.
During the 2" Body Lift process, I deciced that I should replace the body mount bushings at the same time. Only problem was that removing the original busings was a frustrating (and 'brute force') process. The new poly bushings will make the truck ride a little 'stiffer' than the factory original 'rubber' bushings.
The two kits from James Duff were pretty good - but getting the original bushings out of the '91 XLT was a real pain in the ass. I ended up using a combination of impact wrench, acyteline torch, box wrench, breaker bar. pry bar, and cutting wheel to get the job done.
Be careful with the mount that sits next to the gas tank (on the driver side) - you need to squeeze the 1" wrench onto the nut w/ very *little* clearance. Use the frame-rail to 'brace' the wrench.
It's a two-man job. Don't punish yourself by trying to do this alone. :>)
For those who are interested, here are the hardware sizes:
The "under" side of each body-mount is a 1" square nut. The "upper" side of each mount is a 17mm, 18mm, or 19mm bolt - depending on which mount you are working on.
If you don't have a 1" open end wrench - forget about it. Crescent wrenches just won't handle the torque that you're going to apply.
Some people will tell you that you can do a body lift without removing the interior. Bullshit. Take the time to do it right - remove the seats & carpet and have them professionall cleaned. Install "Dynamat" (sound deadener) while you have the chance. It's $200 well spent!
Plan to spend an entire weekend (not just 5-8 hours) doing the body lift PROPERLY.
After the body lift is done, I should have enough clearance to drop the 5.0L engine and run a set of 35x12 tires (on 10"x15" rims).
Hope this helps,
Graham