UD was a couple months later. No issues with the install. Took the shop about an hour 'n a half. No noticeable difference with any of the charging systems. The pulley is only 20%, so wouldn't anticipate any problems. I also use the Gates belt. It's much better quality than stock, and as I recall, Stillen threw it in.
Performance wise, the UD pulley is great bang for your buck.
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Stillen G3|CBE|ground kit, F.I. H.F.C., C.F. fangs|mirrors|pillars, Hotchkis, SSR Type-F, RE-11, UpRev, BC BR coilovers
15% tint, LED black hdlts, color match handles, Dynamat, tail lt. tint, Mines C.F. frt. lip|rear spoiler, Amuse rear,skirts, vented fenders, c.f. vented hood, gloss blk. roof
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