John, that old chart is flawed .
Do you know it's origin ? PHS uses that glossary - did they assemble it ?
8 is the M21
9 is the special M20 for 3.90 (with correct speedo gear)
John V. schooled us on this years ago
I also think 702 is wrong.
PHS sheets are blank in box 70 for standard axle
70-1 for saf t track
70-3 for saf t track 3.90 cars
Leaving 70-2 to be special order ratio
Bad manners to cross-over year models , but here is my 65 M20 3.90
Code 703 axle type
Code 71P ratio
Code 779 trans type
Keith Seymour's Dad's 65 was ordered with M21 3.90
His is Code 778 trans type
On the 1965 Spec Eqpt sheet I posted - Close Ratio is 77-8
