They made a million of these. I don't think there is any difference between the supers except the have a 2MM larger piston and cylinder. They will work fine with the stock clutch. I have one torn down on the bench now that needs a piston and I think I will just put it back stock. I have bought the oil pump drive gears on eBay. If it's like most Stihl parts you can probably buy a whole junk saw for what they would want for the clutch cover.
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