The world of tow vehicles would be a better place if

The talk of picking engine to put in any brand off truck has been common in heavy trucks forever.
IMHO, a great improvement in TV market would be for the manufacturers to sell glider kit or complete trucks without engines, so a guy that spent all the money to buy a truck with half million mile engine can use the engine for it's lifespan. And to give you a reason I think this is good idea, I bought a '76 Pete with a 1693 Cat. Records on the engine showed that was the 3rd truck.