Rico,
I don't think Ron Mancini was at the 1967 Super Stock Nationals with
the 1963 Plymouth Max-Wedge 'Aluminum-Nose' SS/BA car.
Arlen Vanke had a 1963 Plymouth Savoy Max-Wedge 'Steel-Nose'
non Ram-Air car that ran in SS/CA.
It may have had an aluminum front bumper on the car at the time.
The 1963 Plymouth Savoy 'Steel-Nose' 426/425 HP Super Stock weighed in at #3328 lbs. ~ 425 HP = 7.83 Wt/Hp
They were a perfect fit for SS/CA in 1967.