For 8-9 leaf spring 3 18 length All M5 trucks

1938-39 Commander 1939 Coupe Express

Some M-Series applications

For 11-12 leaf spring 4 12 length M15 M16 M17 trucks

no further info available

Felt 1947-49 Commanders use 2

1947-49 Champions with HD springs

All 1947-49 cars use 2

Rubber All 1947-49 cars use 2

For front spring control link 1941-42 Commander President 1941-46 Champion

1941-46 Champions use 2

All 1941-42 Commander President 2 per car