Don't worry about any drag/loss of the 6 speed. The gear ratios are all wrong. The ratios are for the 996 (same tranny) NOT the Boxster 'S'. That's what you should be worried about.
"Drove 6000 miles in 2 years [Boxster 'S'] and the gearing was horrible in my opinion....I was unhappy with the Boxster 'S'...
The Boxster 'S' should have gotten the 5 speed gearbox of the 2.7..."
-Chris from Germany (CFG)
Admin for 996 board (
http://www.funcarsonline.com/ubbthreads/ubbthreads.php)
Do you have any idea who CFG is? Ever heard of him? He knows more about Porsches than anyone on this board.