Although the Early Bronco remained fairly similar in body style throughout its 12 model year run, there were some differences through the years. Arguably the biggest of which are the very early years being equipped with doors that had removeable window frames. One of the most endearing qualities of our beloved Early Broncos is it's removeable hard top. Once convertible weather gets here, many a Bronco owner has a hard top sitting unused collecting dust somewhere on his property. However, once the hard top is removed, the window frames look somewhat out of place. It seems that Ford's engineers felt the same way as '66, '67, and '68 Broncos came from the factory with doors with window frames that could be removed by removing five bolts and then sliding the window frame and vent window assembly out the top of the door. In 1969, the removable window frames were discontinued in favor of permanent window frames spot welded in place. Although the doors to all Early Broncos are the same dimensions and utilize the same hinges, the '66 and '67 doors used a different striker post and located that post in a different location than Early Broncos of later years. Early Bronco owners who have a '69 or newer model and want to convert to the doors with removable window frames unfortunatley have only one bolt on option - finding a set of 1968 doors. In 1968, the Early Bronco still had the removeable frames, but was changed to the later style striker and striker location, making them the most coveted doors of any year Early Bronco. In fact, in September 2006, there was a prospective seller trying to sell a set of 1968 doors for $1,400 in the classifieds section of classicbroncos.com. Needless to say, he wasn't successful. For the Early Bronco owner who's interested in having a set of the removable window frame doors, there are a couple of options other than tracking down a set of the elusive 1968 doors. Some Early Bronco owners who are adept at body work have successfully integrated the early style striker post in the correct location on their 1969 and later models, while others have simply drilled out the spot welds holding the later model window frames in place and modified them accordingly to accept nuts and bolts, effectively making them a later model lift off window frame door.