i don't know if anyone already knows about this, but there is a pretty detailed article(picture-wise at least) about an 85 show truck that i stumbled upon while trying to figure out how to mount gauges.
i think many here will find the interior section particularly interesting.
i don't have time to read it, nor do i have time to care.
But you can enjoy it.
http://www.truckinweb.com/tech/body/0505tr_1985_chevy_c10/index.html