I have a 2000 Ski Nautique and would like to upgrade the driver seat back to the 1997 - 1999 configuration with the 3 section cushions. Can this be done on my current 2000 seat back plate or do I need one from a 1997 - 1999? I have a good upholstery person who can make the cushions and replicate the upholstery. Thanks for any assistance.