Hmmm. Well there's no easy way to say this folks, it just isn't any cheaper, easier or better to fit gullwings to the OEM sliding window system, period.
Let me elaborate on that.
The windows run in an ally profile which is wrapped on the outside with the rubber that holds it in the vehicle body. If this were sawn through, it would vaguely resemble an E section. The rubber goes all the way around the back of the E and down the external then the internal edges of the two voids where it stops. There is then another rubber vaguely W shaped that sits in the two voids and over the central spine of the E that the glass runs in. This overlaps the outer rubber and there are all sorts of drainage channels in the base to let the water out that will have collected over time and started rotting the ally.
So, the only option in my eyes is to somehow replicate the ally and replace it. I was hoping to use the rubber runner for the door frame to sit in, which is ok until you factor in the fitting process which would see the ally cut at its join to then work around the rubber W on the new door frame then try fitting the outer rubber which is a right fiddle without any glass in, and get it tucked into where it should be. With a new ally profile, this would be tricky. With an old one, there is the chance that it would break or deform. Then, once you've managed all that, it's designed to leak because it resembles a gutter on the outside. So any water running down will collect at the base of the new Gullwing frame and begin its evil work, eventually bubbling the paint and going nasty.
My view therefore is that I cannot offer something I would not be happy with that may not seal or work satisfactorily for a good length of time.
The other option is to make something that emulates the ally that the frame is fixed to. The cost of this would be prohibitive, so that's out. Weld it to the existing? Too costly and impossible with any corrosion present. Form a connector to fit onto the existing ally, again too costly.
There really isn't a sensible way that a proper fit can be made that isn't better in all respects and more cheaply done by the OE fixed window rubber. This design allows for the flush fitting as shown, whereas even if the sliding system could be made to work, it would offer a gutter for water to collect.
I can happily supply the doors as shown but a rubber will be necessary. This has the benefit of removing the corroding ally section in the sliding windows and being totally reversible.
Sorry if this disappoints or puts these beyond financial reach for some which I understand. However, a multi buy from Amayama could see the rubbers at around £30 each IIRC (estimated price based on buying from Amayama UAE and noted on the other buying thread).
Sorry folks, I really did try. [emoji20]