Wrecked Bench Seat 1974 Scamp

The bench seat in the back is fine so I will just use a skin but the front seat is horrible. I mean woopdy doo if it is ripped but the springs on the driver side are just dead. You sink right in when you sit down. Could I just get new springs or would I have to get a whole new seat?

http://sites.google.com/site/74scampproject/before-pics-interior/P2280743.JPG?attredirects=0
http://sites.google.com/site/74scampproject/before-pics-interior/P2280745.JPG?attredirects=0