standard mopar buckets/ fixed back or 2 door style and recline, used in a range of cars will fit an A body
my own aussie one uses the same seat frames as a 68/69 B body with the LL shaped rails orientated appropriately on the base of the seat to fit the car floor pan holes
i re did my seats here
the trials and tribulations of re foaming and reskinning two seats
Dave999's Aussie Charger - Page 15 - Mopar Muscle Association UK
id never done anything like it and made my way by making it up as i went along
Results better than expected