Dynatrak folding lounge seats

[CAMPBELLRUS]

Hey, does anyone know of a source for replacement folding lounge seats for a 1985 Dyanatrak 176 S/S? I saw a photo of the original seats and it looked like the pilots and co-pilots seat both unfolded so the back laid flat with the seat and an additional cushion on the opposite side of the seat back folded out also. The lounge would then be at least 3 cushions long.

Thanks for the help