Ok, I found the bucket seat dimples in the floor and got them drilled. Now, my seats are highbacks from a '73-'74 Dart and I know the mounts are different in height, so my question is, can anyone give me a measurement from the floor to the bottom of the seat on their original '67 Dart bucket seats? Do the brackets have a slope to them? I can do all the necessary mods to make these work if I can just get the measurements. Any help is greatly appreciated.