Reading all the threads on the rear shocks kind of scared me to do this since I'm not much of a mechanic. I found a couple tips though that I thought might help someone on the fence about doing it themselves.
When I took it upon myself to replace the rear shocks, I had every intension of cutting a hole in the floor to get the top nuts. I figured with my MN car I'd need to.
I thought I'd try doing it without cutting a hole just to see if I could do it.
Turns out this tool from sears made it so I could do it without that.
Here's what you need to get:
http://www.sears.com/craftsman-19pc...p-00931088000P?prdNo=3&blockNo=3&blockType=G3
This is key because it's low profile on the nut, but you can still slide a pipe over the handle. A regular wrench or even the ratcheting wrench has the crow foot on the opposite side that you can't slide a pipe over
Cutaway the shock to get a vice grips on the piston. I used a tin snips to cut it away:
I had to get that unbelievably tight to keep it from spining.
Get the tool on the top nut like this:
and watch out for the fuel lines:
I bought a 12" and 8" piece of 1" pipe and put those over the end of the wrench and was able to break the nut free on the drivers side. Only was able to loosen the nut about 4 clicks of the ratchet at a time, but I got it off.
Caveat:
I must admit now that passenger side was not that easy, the nut was so rusted it didn't fit inside my 19MM socket and I stripped it with my 13/16 socket. I ended up cutting the shock piston right through the bottom rubber cushion wit a regular saws all. This was actually VERY easy, just keep the rubber and blade wet with a squirt bottle.
When I took it upon myself to replace the rear shocks, I had every intension of cutting a hole in the floor to get the top nuts. I figured with my MN car I'd need to.
I thought I'd try doing it without cutting a hole just to see if I could do it.
Turns out this tool from sears made it so I could do it without that.
Here's what you need to get:
http://www.sears.com/craftsman-19pc...p-00931088000P?prdNo=3&blockNo=3&blockType=G3
This is key because it's low profile on the nut, but you can still slide a pipe over the handle. A regular wrench or even the ratcheting wrench has the crow foot on the opposite side that you can't slide a pipe over

Cutaway the shock to get a vice grips on the piston. I used a tin snips to cut it away:

I had to get that unbelievably tight to keep it from spining.
Get the tool on the top nut like this:

and watch out for the fuel lines:

I bought a 12" and 8" piece of 1" pipe and put those over the end of the wrench and was able to break the nut free on the drivers side. Only was able to loosen the nut about 4 clicks of the ratchet at a time, but I got it off.
Caveat:
I must admit now that passenger side was not that easy, the nut was so rusted it didn't fit inside my 19MM socket and I stripped it with my 13/16 socket. I ended up cutting the shock piston right through the bottom rubber cushion wit a regular saws all. This was actually VERY easy, just keep the rubber and blade wet with a squirt bottle.