what are the benefits besides looking so very cool!!
Well if you go serpentine then you will increase the belt area and reduce belt slip. They are also are less likely to throw a belt. I guess you also get a little weight savings(maybe 5-10 lbs) if you get the whole system with brackets and all. Other than that, you might gain like one or two horsepower from less parasitic loss from the reduce weight of aluminum pulleys. So to recap.....biggest selling point is how bad ass they look, then how they reduce belt slip, and finally how they improve your ET by .001 of a second....totally worth it if you ask me