Installed DuroBumps yesterday.
Coated threads with PB Blaster and went at it 30 minutes later.
Rears were easy.
Fronts would have been easy if I had the right tool.
Little Pipe Wrench and "normal" Channel Locks wouldn't cut it.
I broke a small strap wrench.
Ended up running to Lowes for a big pipe wrench and it was easy.
Front bumps are in the picture below and you'll see how you have to get the wrench on the metal-octagon flange