engine swap list of parts

[19931500gmc]

i got a 1993 gmc sierra k1500 350 and a 5 speed w/ od.
i wanna make this truck nice but not spend a hole lot at one time make it a project but still drive it once or twice a week. i am take engine out to put in my dads plow truck which blew up. i got a buddy that has a 93 dually he took the 6.5 turbo out of and put a 454 in. i can get motor, harness, radiator, computer, cluster, slotted bumper (just for looks), and fuel tank for $700. it is the machanical setup. just wondering what parts i need to buy to make it the most reliable, and be as if its supposed to be in there.
thanks guys.