I have a double pulley on mine. Since the engine in the toro 268 & 270 are the same as the LS55, I would say it's a safe bet to buy it
I just go on partstree.com and look for the part #'s when I call them into the Toro dealer (much cheaper in most cases than the N.H. dealer)I wonder if there is some cross reference list between the Toro and New Holland parts?
How can I tell what year it is?