You can look on top of the frame ahead of the rear wheel on the driver's side. the new system will have a pressure regulator built into the fuel filter lines. A photo of this filter is at:
www.peachparts.com/shopforum/attachment.php?attachmentid=14325.

You will have to pull up the fender innershield a little bit to get a look at the filter. Basically, if you see a line that looks like it wraps around the filter,you have the new set up.

Regards,

Jim in Phoenix