Hey guys, I'm looking at getting a set of pulleys, but apparently the UR pulleys cause a loss of power in the A/C is what I'm reading as I've browsed around... I also saw that UR makes the XLR8 pulley set with the stock diameter, so I could re-use my stock belt and no loss in power would occur, which would seem like the way to go. So, will it affect the A/C that much? Should I just go with the UR pulleys and not the XLR8? Or vice versa? Is there another big difference besides the diameter size between the two?