I just looked at autozone and just parts if i replace the headgasket and piston rings and valve stem seals it would be 300 for just the parts...god only knows how much the labor is gonna be. I found another thread on here where a shop wanted 1-2 grand just for the piston ring job...I imagine the head gasket wuold want too much more cause u have to take the head off anyway, but I dont know about the valve stem seals.