1999 Silverado Remove Rear Blocks for Reverse Level

[dirtfan21]

Just picked up a 1999 Silverado 4x4 project truck and I plan to reverse level by pulling the factory rear blocks. I want to replace the u-bolts with the 2wd factory u-bolts, but I have read there may be two different sizes. Can any of you tell me the correct part number for the u-bolts, washers, and nuts? 

 

Thanks

[Gagliano7]

Here is what i used works from 1999-2018. GM OEM Rear Suspension-U-bolt 15002781 Got them off Ebay for $16 a piece and you need 4. Just do a search  with the phrase GM OEM Rear Suspension-U-bolt 15002781and they come right up.