I've seen this question asked elsewhere & it would appear doable but fairly expensive and requires some mechanical know how. There isn't a kit available. You'd have to source parts from a few different sources.
Youd have to find out if the 440 Fan ever had the option, if it did, yes it can be done. IF not, well it may not be possible. I am pretty sure you need a stator and cdi from a sled that it can be done. You would also need a different secondary clutch I believe. Like revrnd said, it maybe possible , but it wont be cheap, even if you can find used parts.
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