Right on Tim, very clear explanation. Classic Parts of American (Chevy Duty) has the windlace in black or the gray. I used their door seals also and they fit fine, no problem with the door closing or wind leakage. the box that the seal came in was marked with the GM approved reproduction label.
I have personally seen problems with the door seals from Steele for the AD trucks.
Steve, I don't mine helpin ya out at all but why don't ya get out to a show or swapmeet and look at a couple of AD trucks to get a better picture of what's going on, it's really not all that complicated unless you have made somekind of modifications that you haven't mentioned.
Denny Graham
Sandwich, IL