Daniel, I have seen a set of these in a friends car in Nashville (one installed and one not.) The composite frames that hold the whole thing are made oversized, so as long as the overall shape of the window opening hasn't been altered, you should be able to fit them. In Peter's picture the composite frames are held in with fasteners, when this option is ordered from GT40Aus they are optionally bonded in and look real nice- a part of the door.
Peter, I enquired to Mr. Ransom on these and he only sent me a price list that was a bit ambiguous as to what you were getting for $800+ price tag. I guess my rants about his lack of responsiveness really ticked him off because I have not been able to get any type of conversation going with him to clarify this since then. Initially, I suspected that the price tag was for the MkIIIs bonded into the door as an option when ordering a kit. Talking to Bob Williams educated me on the amount of hand work that goes into constructing the fine aluminum frames, hinges and cam locks which are all hand made. Can you clarify for us what the cost is if we just wanted to order the window kit and install it in our doors, please? Or, if we even can order it this way? I, for one, would be very greatful as I have always liked the MkIII windows since Dennis sent me a whole packet of pictures of the DRB some three years ago. I am far more into functionality than aesthetics or histrionics and really like the useability these windows add to the car.
PS. Peter, I have pretty much resigned my self to polishing the aluminum from time to time. When I get a chance, I may try brushing the Glisten on. I may try it on a different piece though as I really believe there is a problem between the Glisten and the particular alloy used to make my console cover. Thank you soooo much for all the help you gave me while I was trying to clear coat the piece!!!