Working on my 1964 CJ3B. I know the front seats were vinyl with cloth inserts and I have found the correct material and color at SMS Auto Fabrics. From what I understand, the rear seat was an option ($50.77!) that was purchased from the selling dealer at the time of sale? The very few photos I have seen of original rear seats, they all appear to be upholstered in black vinyl with no inserts. Does anyone know for sure? Could the rear seat be ordered with upholstery to match the front seats? Thanks!