Bob, you may be right about those yellow doors coming off of a hardtop if the glass is flat and not curved, even though I still have pictures showing those doors on the conv I pulled out of the junk yard, as I can't remember having a yellow hard top. But that was back in 91 or 92?? Anyway I pulled out an old numbers book and checked on the mod. numbers for 68 hardtops and convertibles. So now to confuse the issue a bit more, here goes... In 68 , Chevrolet made three hard top models. Model # 6647 was a CAPRICE V-8 eng. Model #6447 was an Impala CUSTOM V-8 eng. Model #6487 was the sport coupe/ or FASTBACK, also a V-8 , as the second digit is and even number. All of these Mod. numbers are part of the VIN... In addition to the hardtops, we also have the convertible Model #6467 also a V-8 as the second digit is 4, an even number.....Here is the full VIN off of my convertible. 164678T226359. 1 for Chev. 64 is series. 67 is conv. 8 is yr. T is plant, and the seq. build numbers.....So now lets look at my Glass ref. information charts: The CAPRICE door glass is much longer in length and it shows no wing window for this model, So, did the Caprice even have a wing window, I am not sure? The Custom mod #6447shows the shortest door glass in length. The FASTBACK model #6487 and the convertible model #6467 door glass are showing the exact same measurements for both.. In 1967 Chevrolet did NOT make the Caprice or the Custom models, only the Convertible and the 2 dr Spt Cpe or FASTBACK, and they also had the same glass as the 68 models. Bob you may just have to relax and wait for the car show season and take your tape measure with you. The wing or vent window glass were all the same measurements as shown in my ref. material. In addition, all of the wing window chrome frames on all of the 68's that I have seen are all flat across the top , not like the 61 thru 64 where the convertibles are flat and the hardtops come to a point. Now have a beer Bob, and it should all come together in time.
'