67/68/69 cuda dilemma

Springs are off. 5 leaf units. Not sure if these are stock or not. This car was a 318 car when it was built. Wondering if these are heavy duty or stock.

View attachment 1715457147
Matt my 67 had a 7 1/4 and the springs had 5 leaf counting the short one on the bottom.
My 68 had six leaf . It had an 8 3/4 & 4 speed. I used these on my build. Rides nice and firm.

15798006044838304715745327514487.jpg