So I have recently acquired a new to me 1986 K20 6.2 diesel. The previous owner pulled the heads and discovered they were cracked. It sat up for a couple years and now I'm looking to get it road worthy. The caveat is that I need to get it on the road ASAP. I'm thinking about finding a similar era suburban or truck with a running motor and stabbing in, so it will be road worthy quickly. I can (and will) do mods later, but for now I need a happy household where all the vehicles run. So my question is this: What incidentals should I go ahead and prep for the swap? Fuel/air filter, maybe glow plugs? I'm thinking total fluid change, and probably drain the tank and start with all fresh fuel. And go ahead and change out all fluids; antifreeze/power steering/ tranny/etc. Are there some other items that I should consider while I've got the motor out that may save me some grief later? Thanks in advance.