Take a small percentage of that estimate and rent some shop space. Do a little at a time while keeping the truck in driving condition for as long as possible. For that price, I'd expect the job to include a "crate" engine and rebuilt components for the rest of the drive train. Otherwise, invest in a BIG tub of Vaseline!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!