When I pulled my burb body off of my chassis the original blocks stayed in place but looked rough. I ordered the "body mount" kit from Carter's that came with all new bolts, blocks, and rubber pads.
When it came time to put the body back on the chassis I noticed the new blocks were way too tall and narrow. I almost think they were pick up bed blocks. I re-used my old ones and used the new bolts and pads that came from Carter's kit.