Hi Dan,
My 328 GTS is 22 years old had 7 previous keepers and has covered 59,000 miles. (less than 3,000 a year) Full history and has been cared for by my local Ferarri specialist for 14 years or so. When I bought it they had just serviced it, replaced the belts and overhauled the A/C. They also completely refurbished the alloys and some paint work was carried out. I am unsure of the extent of the paint work but since owning the car there are no signs of any corrosion returning (If indeed there was any before!!). I rate my car just as much as any low mileage examples I see advertised. Plus the fact no one can see your speedo when you are driving along just a beautiful sports car!!
Good luck and enjoy it
Best Wishes
Stuart