I am wanting to go with a 2.5 inch leveling kit up front and a 3 inch block in the rear. What companies should I go with? I have already looked into the Rough Country front kit but don't know where to go for to get the rear block kit. Any help would be much appreciated.

 

Autospring has a combo kit that includes both level spacer and block for 180. They sell them on eBay.

 

Readylift has a 3" block and they also come with bump stops which other companies don't include.

 

I would suggest going with an add-a-leaf in the back for an additional 1.5" of height in the back... this will actually stiffen the suspension just a little bit and increase your hauling capacity. Personally I like the way my truck feels with the AAL. It feels firmer, not rougher like a two horse wagon... Also, rough country sells the kits as combo kits with the level kit and aal or rear block. Personally i think you'll enjoy the added height and firmness from the AAL more so the just going with a larger block. Did the block on my brother's truck and didn't come up near as much as I thought it would and IMHO my truck handles better with the AAL