one thing leads to another

[LittlecountryK15]

so I was just going to change out my u-joint in the front until I ran into alittle trouble.......I can't seem to get the last bolt on the front driveshaft to come out. It is one of the bolts that holds the front driveshaft onto the transfer case. I have tryed to put a pipe on the end of the wrench but it just rounded the ends off.....Im out of ideas on this one.

Also the plate that holds the transfer case and almost everything else up is broken in half almost....looked in some LMC mag. but I can't seem to find the right plate to replace it.......I guess a juckyard would be the best bet on finding one.....unless yall know where I could get a new one....