Jimi,
Found some minimal information that a few of the 1962 Plymouth Sport Fury 361/305 HP cars
were 'chemically engineered' (lightened by 200 lbs.), and factory prepped for A/SA (10.60 - 11.29 Wt/Hp) in 1962.
The 1962 Plymouth Sport Fury 361/305 HP weighed in at #3267 lbs., and had a 'near perfect' 10.61 Wt/Hp factor.
1962 NHRA Classes,
Classes were changed in 1963
1963 = C/SA
1964 = C/SA
1965 = C/SA
1966 = D/SA
1967 = C/SA
Back in the Day, they kind of 'floundered' in 1968, when the classes were re-factored.
1968 = F/SA
1969 = G/SA
1970 = H/SA
1971 = H/SA
1972 = SS/JA
Back around 1970, you could find these cars sitting in the back 'weed lots' of the Plymouth Dealerships.
We called them the 'Ugly Lots', or 'Old Man Cars'.
What did we know.........