Pretty!! I sold my red light 066 to a friend years ago. Dunno why. It was working fine. I'd bought a new one, I think. He's retired now. I want it back!!
The old dual port muffler 066's were rated at 7.7 hp. I have a newer 660 now. It doesn't seem as strong. I do know that a woods ported 390 will easily whip a dual port otherwise stock 660. Which is why I've always wanted a ported 390, also due to its lighter weight.
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