When I originally did the swap I had ordered the smaller belt but when we got the old one off(stock) it was the same size. It actually ended up slipping off the pulleys, so I thought this would be the next best bet. however if I were to cut off the eye on the top of the tensioner it looks like the new piece slid on the Shock would be putting to much tension on the belt...How about anyone out there selling a cogged serpentine belt kit???