Cat Sixty Question

I was checking out Mike Knaub Cat Sixty at Kinzers last weekend. (witch i wouldnt mind owning, lol)
I like the factory belt pulley on the back of it.
How hard are they to find?
Even tho i dont own a sixty at the moment if i come across one should i pick it up? ( i do hope one day to own a sixty)

What other accessories did they offer and how hard are they to find?

Paul from PA

Cat sixty belt pulleys are very desirable and not easy to find. If you find one get your hands on it. Other attachments include spark arrestors, tow hooks, compressors, winches, pto's (much harder to find than a belt pulley), generators, lights, cold weather packages, cabs, bumpers, radiator guards, various track configurations, hydraulic pumps etc.. Grab them now because when you get your sixty you may not be able to find them..