Would anyone happen to know how tall of blocks a person could put in the rear with stock shocks?

I put 2" ones and my stock rear shocks were fine.

Cool, That is what I bought so I think I will give it a shot. Thanks!!

I have the Cognito kit coming in this week.. I went with the Bilstein front and rear shock upgrade. I installed 2 inch blocks in the rear over the weekend. The part #'s are for the blocks and the U bolts. I got them from someone here at DP but cant remember who.. If you know who you are they worked out great and they are OE parts. Rear: GM 1/2 ton 4wd 2" Spacers GM P# 15712451
GM 1 ton 315mm long U-Bolts GM P# 11588342. I have the green keys too that I am installing at the same time I do the level kit.

I didn't know gm has 2" rear blocks. How much are those? I paid $20 for mine.

I do not think the stock shocks would work. When I put the 2" block in mine the rear shocks were topped out at just ride height. There was no down travel left.
ac

The blocks were around 20 per side and the bolts were 16 each. I reused the nuts and washers. Pretty easy job. I reused the shocks. I had plenty of shock left but I do have the Bilsteins coming with two extra inches for the rear.