1981 gmc 1500 with 2002 C5 vette 5.7 LS1 swap

Great truck, he engine is a 2002 c5 ls1 transplant 5.7 V8. nice Fun truck! Body in great condition, nly small amount of surface corrosion. Engine just turned 50k and ECM was flashed when installed to engine mileage. Th400 trans shifts smooth. WNelson performance did the swap, on't have a ton of info, ut it runs great never maxed it out yet on road does 1800 at 70mph. EGR is deleted which means ECM was tuned may be time for a mail order re tune if desired, ut runs great. Has cam and lifter upgrades.
New -
-BF Goodrich KO2 AT 31x10.5 (rear)
-front wheel bearings
-new spark plugs
-radiator flush, br>-turn signal switch
-hvac blower motor, c works.
-jeep steering column (u joint)
-rebuilt power steering gearbox, br>-all new steering linkage inner/outer tie rods, nd ball joints, br>-control arm bushings/inserts, br>-new coil springs.
-master cylinder & brake pressure booster
-front Calipers
-front pads
-vacuum lines.
New ac delco water pump with gaskets/thermostat to install. Have new vette fuel filter with regulator, ave valve seal cover and grommets to install.
Needs alignment