It is my understanding that Ford made three sizes of front stabilizer bars for the 1966 model year. 5/8" for the 6 cylinder and the 2BBL and 4BBL V8's. The K-code and the Special Handling Package option had 7/8" and the Shelby had 1". Is that correct? How about the rubber isolators and the U-shaped clamps that hold them to the body? Would there be three sizes of those too? Thank you.