2000 appears to be the beginning of the single row, with 2005 or 2006 with the start of a heavier duty single row. There is a good description at LN Engineering: IMS Failures Explained | IMS Retrofit
The car,at 80,000 miles,in my opinion has had plenty of opportunity to create a problem and get repaired.Just set aside some dollars for future repair/maintenance like on any premium car.
Old Hippie Young Heart
2000 S/3.2 Liter/Tiptronic/Boxster S Sport Package/Cruise Control/Slate Grey Metallic
Red Special Leather Interior/Red Floor Mats/Red Hand Painted Instrument Dials/Roll Bar/Windstop
Small Carbon Package/Leather Wrap Carbon Wheel/Center Console Exterior Color/Alum Carbon Shift Knob
AM/FM Radio w/CD Player & Changer/Digital Sound Package/18" Turbo Wheels/Wheel Caps w/Colored Crest