I don't know. From what little I have seen and heard, it seems they interchanged parts at times. I have seen it on other saws that were near change-over years. Mixed parts on one saw and normal parts on another saw. I have seen 3 or 4 different combo's on 350's, so I don't know which jug is supposed to be stock. I just know that this one was taken apart at some point and everything was loose when I got it. This porting should flow real well, and it is super easy to do the transfers with the caps. The whole thing can be done with a dremel and a round end straight burr. I'm loving how easy this one is. I might have to get a mill so I can mill the sides off of cylinders and put covers on them all.
