[ZL1power69]

I'll add my experience here. Just changed my intake gaskets a couple days ago and took almost 5hrs to complete with a friend giving me a hand. Before this the dealer i bought the truck from mixed in green coolant and it turned the dexcool into a sludge. I flushed it twice and replaced with green coolant. I had no coolant in the lifter valley but the edge of the gaskets were eatin away and it was torn in one spot. Did have sludge built up in the rear cooling ports in the heads. I used felpro's as replacements and they are twice the thickness of the stock ones. The kit also includes gaskets for the upper intake, distributor, and all other o-rings. I was able to pull the power steering pump foward enough to get the manifold out without removing the fan. I also removed the fuel lines from the top of the manifold instead of the rear. If this is done, replace the o-rings on the fuel lines and put the little bracket back on the correct way. Fuel will leak out when you prime the system if you don't do this.