My 36th Edition Holander Interchage Book says that 63 and only 63 dart back glass fits your car , no interchange#2387. The 64 Back Glass (#2702) fits 64-66 2 dr, hdtp,sdn, and 4door sedan. Hope this help you some.Can anyone tell me if the bottom corners or your 64 rear window are square (90deg) or rounded. My 63 has a pretty good curve, I think the 64 is more squared off, that's why the two are not interchangeable.