2.9L heads and lower intake

Heads have 35k miles on them, one is an aftermarket casting and the other is a rebuilt factory head. They used to both be aftermarket but the head builder didn't know how to properly install a valve retainer and the engine ate the valve. The rocker arms and pushrods are included. I installed all new ball studs and replaced the pushrods when the heads were installed. The lower intake I bought new from ford. The dark spot around one of the water ports is the gasket, I cleaned it off to show the aluminum is not corroded. Asking $500 plus shipping