UH OH, white plugs

ok so i changed my plugs this morning. Ive been running the autolite 764s for the past couple of years. When i pulled them out they were white, and the electrode was rounded off from where it got so hot.
The motor is about as stock as can be. When the car was bought by my buddy a few years ago it had been sitting in a field for 6 years. In trying to get the car to start we swapped out the fuel pump with a stock 97 mustang v6 pump. Flow about the same as the stock tbird i believe
Put a mbc on and running 12psi w 89oct. Did swap out the auto for a 5spd. I just changed the fuel filter 2 weeks ago as a part of my routine maintenance. http://natomessageboard.com/uploads/0000...0-1107.jpg

guess im gonna have to steal the wb from the stang and see whats up.
Ive got a 255pump and fpr laying around the shop. Also i might look into some injectors as well. Being they are the stock ones i think 260k miles might be enuff for them. Where would b the best place to get some new ones?
Any other thoughts?