I had saved this, I can't remember who posted it originally.
By the looks of it, if you're not zinging past 7800 rpm, you don't have anything to worry about.
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Six speed 2000 Boxster S
Arctic Silver on Metropol Blue | LN Dual Row IMSR | Arctic Silver console, spoiler frame & bumperettes | Crios mod | Technobrace | RoboTop module & modified convertible top relay for one-touch roof operation