Rear Seats for 1995 993 Cabriolet

It's my understanding that rear seats were an option on 993 Cabriolets. I just purchased a 1995 993 Cab that has the rear deck converted to a subwoofer/amp platform. I'd like to redo that area and put seats in but I have two questions (I know that the seats would be a comprimise but it lets my 2 small boys go for rides with me).
First, does anyone have any info on the seats that would have been available for the car and,
Second, does anyone have any idea where I can go to find seats for the car?
Thanks much.