I have a 99 1500 suburban with the 5.7l engine. Runs fine but it's got 252k miles on it. I'm thinking if and when it goes about putting a 6.2 diesel in it. I use this 90% of the time for towing my RV. I would like the power and mpg a diesel provides. Does anybody know how much a new one costs and how much modifications I have to do for the conversion. I read somewhere the tranny is the same buy I'd need a shorter drive shaft. Is this true? And is their any thing else I have to do to the fuel system,tank, lines, etc.