I have an '84 Caprice wagon and I need new body bushings but can't find any for it. I know that the floor pans form 90 to 91 didn't change and the frames are interchangeable from 77 (?) to 96. Is it a reasonable assumption that 91-96 mounts will work on my 84 and will sedan mounts work on a wagon? I found a set from Summit but I don't want to order them without feedback on if they will work or not. Thanks in advance for any help.