This weekend i installed the delete kit in my 2007 LBZ Duramax, 2500 HD gmc. The block off plates i got sent were not the right fitment so i had to buy a crossover pipe. I also picked up a 3" hot side oversize pipe from the turbo to cooler.
Ill eventually have to change the up pipe to an LB7 style as the block off plate isn't perfectly machined.
In other words dont buy junk off Amazon when it comes to parts. Buy from a good company lol.