Replacing the body mounts can be a pain, but not so bad once you've done it. Trying to do it without removing the battery tray was a waste of time. Plus my radiator support mounts were so dang corroded I thought I was doing something wrong. I kept prying on them rather than punching them out from the top. If I did it again (mine our solid, so I shouldn't have to) I could do it in half the time.
1. At least one week prior to task, spray all bolts from top and bottom with penetrating oil once every day. The welded nuts have a tendancy to corrode, so if they break your looking at a lot more work!
2.Remove the battery/battery tray (this will be required, don't bother trying to avoid it. You'll make more work for yourself.
3.Start with one side of the car. You need to leave at least two bolts tight at all times to avoid having the subframe shift.
4.Remove all three mounting bolts on the passenger side, plus the core support bolt on the driver side (leave other two bolted).
5.Unbolt the two pass.-side bumper bolts (this connects the bumper to the subframe. You do not need to unbolt completely, but at least unthread half-way. Mark around them to see if it shifts, so you can realign the bolts later. 6. Place a 3 ft. long 2x4 (I used a 1x6) on top of the jack and jack up on the rocker panel. You'll probably need to go as high as having the front tire leave the ground.
7. Remove the rear two subframe mounts.
8. You'll probably need to hammer out the core support bushings. It took me a solid 5 minutes of pounding with a hammer, extension, and a socket (how not to use tools)!
9. Install new core support bushing.
10. Lower car on new mounts.
11. Get lunch. This will actually give the car some time to settle.
12. Tighten bumper bolts.
13. Retorque two rear-most bolts to specification. (Leave pass. Core support unbolted).
14. Repeat steps 4-10 on driver side.
15. Reinstall battery/battery tray.
16. Take another break. (Let car settle)
17. Torque all remaining bushings to specification (drivers side, plus passenger core support).
18. Drive vehicle. Low speeds, listen for noises or anything unusual.
