I've had this problem at 2 different occasions after doing my thermostat, it has overheated:cuss: and I finally took it to ford to get the coolant system pressure tested. I've burped it 3 times now on jackstands and have been frustrated as hell with this. They put the car on the lift at the dealership and said that the leak was at the front of the passenger side head and was dripping ever so slightly. So after all that they tell me my head gaskets need to be chaged and give me an estimate of just a tad under 2g's. I would normally want to do this myself but don't have the time or space to do it. What are my options? I'm still gonna need the car on a limited basis till I can get it in for repair. Should I repair it or try to go 5.4 DOHC? I'm kinda on a limited budget or does someone have a nice longblock(5.4 or 4.6, doesn't matter) that they would want to come off of for a resonable price?