Hi Big Time,
I like the look of the taller push bars, Chevy changed them to a shorter unit in the early '90's model years, not sure what year after 1990. Haven't seen an available set on any Vans going into a yard yet. I may be able to dig up a part number, RPO code.
Cool part! Always cracks me up, how interesting some random Van knowledge can be. Doesn't take much to keep us entertained!
Good Hunting! Don't hit the Brakes!