Rusted rocker panels

I'm looking at buying a 2000 Cirrus that needs to have its rocker panels replaced. A large portion of the rust is aft of the the rear doors where it goes up about 6-8" between the wheel well and rear door. I found rocker panels at "Nor-Am" but it is just a straight piece (i.e. doesn't include the part that goes up between wheel well and door). Is this a separate part or is the Nor-Am part wrong? Haven't been able to find an exploded view of the body. Any help would be greatly appreciated.

Rmcrawfo, probably just the "straight piece", a good shop can fix this . Does it have rust anywhere else? If the rest of the car is good, and it runs great it's worth fixing if you get it for a good price.