Spanky, WOW...you have done well with yours huh. I took some pictures of this thing, the more I tinker with it the more I like it. it's just too darn cool IMO. I got through one of the sets of wheel cylinders, pretty easy job.
One thing I found just to f'in cool is the GMC letters just like the letters on the front above the grill are stamped right into the rear axle cap... I have not ever seen that before...so it's new to me. later.
http://community.webshots.com/user/squall_5053