HI all, I own a 98 Expedition XLT 4X4 5.4 with a little over 70,000 original miles. Recently I've had a situation of fuel vapor leaking from the valve on top of the tank. According to Ford this valve is no longer available as is the complete tank assembly. My mechanic used epoxy to adhere the broken valve to the tank, but I'm figuring new components will be needed eventually. Is anybody aware of aftermarket fuel tanks for this vehicle. My mechanic and I are both reluctant to use junkyard parts expecting they will be as brittle from the Arizona heat as the original parts.