^ Using my stock S5 alternator pulley as reference, the Re-Speed pulley, at 2-5/8" diameter per their website is the same exact diameter as stock, so it wouldn't help infernosg, as he's looking for an overdrive pulley (to net a stock ratio when paired with an aftermarket underdrive e-shaft pulley). It works for me though, since I still have my stock e-shaft pulley.
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