I'm in the process of installing new shocks for my lift, and I'm on the rear shocks now. I was expecting the upper bolts to break, but instead the tack weld broke and both of them started spinning. I tried an impact wrench and a pry bar for leverage but that didn't work so I quit for the night. Any suggestions on how to get them off will be helpful. I know the last resort is cutting them off with a cut off wheel, but I don't know how safe that is with the gas tank so close... Here's the rear shock bolts:

 

Oo that sucks.. mine broke off then I got a chisel and hammer and punched them through.. I think your going to have to cut them. Then lock nut them
I'm not sure about the gas tank though just watch where your sparks are flying

 

Thinking about it that happened to me when I was installing my rear bumper, broke the upper weld on the nut holding the exhaust up. Had to cut the bolt and fish a new on through the top. Just made sure the sparks were going out

 

Try binding the shock. Push it hard to one side in line with the bar pin. It may jam enough to let the impact get it

 

okay, thanks for the advice. I'll try binding it first and if that doesn't work then i'll probably have to cut it