So I only see F for mustang in the 390 section (no F in the 428 section). Under the designated parts for the A,B,F (w/A/C less T/E)-Except P/C it looks like the adjustment arm part number is C6AZ 10145-A and the mounting bracket is C6AZ 10156-A. Am I reading the table right? (sorry for the dumb questions) How do I know that the same parts were used on the 428 in a GT500?