Storing A Classic

[hemingway35]

Hi all-
I have a 1987 Porsche Carrera 911 that I'm looking to put away for the winter. I've been on a few sites looking up information on winterization, but everything was about winterizing a newer car. Are there any specifics I should know about storing a 20 year old that are different? Any sites I can visit that might help? I figure I'm not the only Porsche owner who stores their car in the cold months here in Pennsylvania, so I thought I would ask the experts. Any help would be greatly appreciated.
It's a 1987 Porsche Carrera 911 Cabriolet. Non-turbo.

Thanks.