A note for you 2000+ owners, it's a little different from Blinkwatt's instructions and much easier. The bolts and bellows are all reachable from the top after the '99 MY.
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1987 928S4 Silver Metallic (980)/Navy (TP) 5-Speed
2000 Boxster Speed Yellow/Black 5-Speed
1966 Wife White/Brown Top
1986 Daughter White/Brown Top (Sold!)
1992 Daughter White/Blonde Top