Talk about tough, this poll is tough!

Given the restrictions of the poll, I gotta go with 71-72 Chevy. But for tough, yes it needs 8 lugs, and also rear duals. 4WD takes it up a notch.
For a drop-dead gorgeous truck that I really would love to see in my driveway, Randy's '67 does it for me.
EDIT: Dang it, my fingers are faster than my brain! I accidentally gave my vote to 71-72 GMC instead of Chevy....