I can go $2800 for a pair of front uprights. The bars with adjustable blades are $2K each F or R but that does not include the cables. I can get used double bar adjusters (car interior) for around $250. You would have to mount the adjuster mechanism and get cables made up for your car.
E-mail directly and I'll send you pictures of an adjustable blade and bar so you can see what I'm talking about. They are 35mm diameter of various wall thickness (depending on your car). I'm out of many of the parts right now but I'm making more. Remind me about the upright price in the e-mail if you want those.
Mark
oemexp@att.net