I should have clarified this is a 1966 Riviera GS, the original parts group seat foams have the verticle reveals for attachment but they should be angled at the top to 12 1/2 inches but they are straight 14 1/2 top and bottom, there is a reveal that runs across near the top, that is missing all together. How does anyone rebuild these buckets, there must be foams available somewhere one would think🤷🏻♂️