if it feels like your rear end is wobbling then then yes it is your rear bushings that are bad but other wise to answer your question i have a 96 and no the bushins are not the same.
As a matter of fact if you have 4x4 you have a total of 8 bushings and 4 of them are one size and 4 of them are another. Napa canda is just another branch of napa but in canda what you want to do is go to a local napa store find the older looking guy that likes to use a book instead of a computer and you will find that he can get them. For the rear i bushings i went to shucks and auto zone and they used the computers and could not find a thing went to napa some old guy was there and we picked up a book and sure enough he had my parts ordered and shown up the same day.