12v cummins into 62 c30

[62c30]

I know it has sat for at least 2 years. Does it matter if the turbo is hooked up to start it? I would assume not but figured I would ask. If it starts and sounds good I'll probably do the killer dowel pin kit and maybe some gaskets and then clean up some and paint it. I'm looking to make a good work truck out of it not make a ton of power, just something with good mileage and reliability. I've had the truck for over 10 years and has been a very good truck so it's kinda hard to take it apart to do this conversion. The front end is wore out and the brakes suck so plan is to rebuild the 1981 frontend and get everything I can lined up so I can get the thing done. Anything else besides the kdp I should take care of while it's out and accessible?