Fixing to purchase an 86 c20

[1963chevyc20]

My grand dad purchased a 86 c20 with a utility bed at a school auction in Dallas. It look really good. What should I look at tho. Where are the common rust spots, what mileage will it get with a 350 4 speed Manuel. He said he did not know if the utility bed was origional but thinks it is. Was it an option? I love the looks of a 74 grill. Will it fit on an 86? New to the 80 model trucks. It Jill be a WORK truck. Wil I'd do good? will put picks up of I get it next weekend.