this should answer a some of your questions

[old man jimmy]

I've seen a lot of posts about what came with what package etc. Thought your guys might find this interesting. When I ordered mine the 72's wasn't in the blue book yet, so used the 71 prices. Took these papers to Jimmy gmc in Tucson. What I wanted came to 4500.00 dealer cost. Told them I'd give them 4700.00 to order it out. They did. As you can see, the standard gmc & blazers were pretty bare bone farm trucks.