Cyclone, Cruiser, and Whizzer
Hi Gang, AZ is correct! The Cyclone, and Cruiser models were a "backdoor" project from the Whizzer factory. It was a one-shot deal, but a rather large one!
ALL wc-1 Whizzers, Cruisers, and Cyclones will eventually need (and very definately benifit from) the NE-5 upgrade.
In addition to blowing head gaskets, you will probably suffer from the exhaust valve parting company with the barrel, and will need to replace the barrel, and cylinder head, and exhaust manifold, which means get the upgrade kit, and go NE. You will be glad you did!
Anyway, don't waste your time looking for factory rep, dealer or showroom for those 2 models, go directly to your "friendly neighborhood Whizzer Dealer" if he cannot help you I can!
Mike