They are not collectible now, but look at the Uncle Tony crowd and 318s... and slants, and 361 B engines this time next year that 66 will be a prized collectible. LOL! but seriously, the thing with early As is finding headers etc. even my 70 dart only a certain size rim will fit under it without bending the wheel lips etc. They all nice cars its just what you can do in terms of mods etc.