I have/had a 650 plus. I used it for a couple of seasons, with bearings. I took the bushing out. I did some work on it this year. New level wind, an extra bearing on the l/w cog. Now it's a c3. I also put blue side plates on from a c4, but kept the black frame. Oh, I also have a power handle on mine. This reel, when I got it was just as good as a 6500.
And right now, it is fast, I mean fast.
