Lets say this 650 does not look like much and I like to leave it this way,as its my sleeper saw. It is the only 600 series saw that I have worked the internals over on and i will say that not much is stock. It is a beast with that big bar and a razor sharp 404 chain that can make a rooster tail that you don`t want to stand in the way as the chips hurt like heck. I take it out once in a while and let it rip on some really big hardwood and its a handfull. It is really hard on clutches and someday I will have to modify a heavier clutch setup for it but for now I have enough NOS clutches for a couple more runs, Pioneerguy600