i hve an exped with 150k miles when i hit the gas on the hwy it sometimes misses or hesitates on an off like i have bad gas or plug pro blem

Mine was doing the same. Check your fuel filter. That was the problem with mine. Cheap and easy fix and it's running great now.

If that's not the problem you might need new spark plugs and wires.

bad news, the spark plugs do NOT have wires in the conventional sense! the coils are parked directly on top of them! 1 of fords better ideas i believe, and it sucks! please see my recent post about bad coils!
hth! hehe!
Rick, Ore