The 67 Dart was a first year model and very few parts interchange between the years, especially the 67. Marker lights, dash pads, dash bezels, tail lights, grills and bezels, and all trim (just try to find a complete set of 67 trim in good shape) are completely different between the 3 years. 67 and 68 especially have individual dash pads that are hard to find. Plus, the doors have different lock positions on 67 and 68. There were less overall Darts made in 67, but they seem not to be as desireable. However, the 273 4-bbl versions were quite potent. Ask me how I know, my 69 383 4-speed GTS had its butt kicked by a 67 270 E code 4-speed car 15 years ago! Plus, my 67 383 4-speed GTS only had 280 HP, plus the heavy front end. Although the best brakes I ever had were the manual discs on my 67 GTS's.