rebuild a 4.8L?
 

i've got a '99 silverado 1500 that has nearly170000 mi. and it's pulled some trailers to big for its britches, i also taught my wife to drive a stick shift in this pick-up; moral of the story is she's about to need a new clutch. i'm wondering if its worth pulling the engine out and putting some love into it? what should i concider doing. will the Jet Chip programmer take care of the electrical side of it?