I have a 1993 K1500 Suburban with a high mileage (220,000) 350V8. The old truck is in great condition for itsage, but I realistically expect to swap or rebuild this engine in a few years;nothing lasts forever, but with the 13mpg mileage I get now with the gas engine,I was considering installing/converting to a diesel engine instead. I know this will be more work and moreexpense to convert over, but was wondering if improved fuel economy would beworth the trouble? Any suggestions as towhat engine (and or transmission) I need to be on the look-out for to make theswap as pain free as possible when the time comes? Or should I just trade for a good used dieselpickup or SUV?