camshaft pulley comparisons?

[wannabfast]

so i was comparing part numbers between an s2r1000 and the new m796 and they are very similar with the exception of 1 number

255 1 024 3a(796/1100)

255 1 024 2a(s2r1000)

now is there a difference if any? im guessing its a revision number or something but im hoping they are the same size/teeth

im trying to find a holding tool for my 796 that holds the outside of the pulley but im coming up with no love, and i dont want to spend the $300 on the ducati tool i will only use once(twice)