I have a 2100. i didn't recognize the one in Norm's pic, for mine is missing its filter cover. In it's place is a velocity stack with a BHAF. Saw has be heavily moded including finger ports. I don't classify this Husky as a work saw. I haven't raced it yet. Ran it for a minute or two to hear it blow smoke. It is sporting a 42'' bar. I don't know the year of this animal, but would classify this one as a "pro saw."