Should I turn my car into a 4 seater or 5 seater?

I have a 1979 Ford Fairmont Boxtop 2-Door. It currently seats 6 people (3 on the front benchseat and 3 in the rear). Should I turn it into a 4 seater (2 in the front and 2 in the back). Or a 5 seater (2 in the front and 3 in the back).

No. Do nothing to mess with this superb vehicle. Enjoy it like it is.

You should leave it alone as is.