S10 Blazer Rear Shock Removal

[chevymotocross]

1991 s10 blazer 4x4. I was going to attempt replacing the completely rotted rear shocks on this blazer, but before attempting I realized removing them is almost impossible.

First, you can't get a socket, or wrench, on the upper nuts. The shock itself blocks a socket from going on straight. No room for a wrench. Second, you have to back it up, preventing the upper bolts from spinning while removing the nuts. Once again, no room for wrenches up there.

The upper bolts/nuts are what's holding me back from even attempting this job. It's just an old plow vehicle, but I'm going to be using it as a daily driver for some time while I work on my C10. I was able to replace the front shocks, would be nice to replace the rears.

Any recommendations on the rear shock removal.... particularly the upper mounting bolts?