Which head gasket did you use? 20r or 22r?  On my setup i ended up blowing the headgasket because some of the coolant passages were covered by the gasket. I think i originally used a 22r gasket and had to switch to a 20r gasket.  Sorry i dont remember for sure which one ended up being right.  Are all of your hoses getting warm? Before it overheats start grabbing all your hoses and find out which ones are warm, this may help you narrow down the problem.  And I cannot remember how the hoses go just by looking at the pics, I would need to have my old rig right in front of me to check it out