First, I want to compliment the colors on your Spider-- the oxblood interior looks terrific with the ivory paint.
You will want to replace the rubber seal at the front top of the windshield, and probably the side tension cables (for adjustment). Your option, but I would also replace any worn door weatherstripping at this point, and/or door seals.
Several years ago, I bought a new top in German canvas from Autoberry for a S4 Spider we had at that time. The gentleman who bought the car had it installed, but it was very good quality and looked OEM.
AutoBerry.com | Alfa Romeo Spider, Veloce, Graduate Convertible Top Replacement 1971-1994 - Convertible Tops | Seat Covers | Headliners
AutoBerry.com | Convertible Tops | Seat Covers | Headliners