simple swap engine for engine. Swap long blocks and you're done. Every thing bolts from one to the other without any issues. Keep the truck intake so it still looks like a truck. You'll scare the pants off of unknowing persons! The truck oil pan will switch over, too. Be sure to align the pan with the bell housing, put in on loose and after bolting the engine to the transmission you can torque the pan bolts to spec of 22 lbs. You'll need the windage tray and pickup tube from the truck too if you use the truck pan. The vette pan is low profile and has kickouts that will be in the way in your truck.

BTW, that's a hell of a price for a low mileage LS1.