Not sure enough to say John, but I have a Poulan 36cc that is externally virtually identical to my 42cc.

Incidentally, the 46cc is a little harder to convert because of it's intake manifold configuration, but it's a lighter and more powerful engine. Something to keep in mind when shopping Poulans... Having said that, I've still gotten very good use out of my Poulan 42cc.

AV8TOR