This is a vintage 1940's Whizzer motor. It was taken apart and sitting for years. That one bracket with pulley came with it, but I don't think it is Whizzer. The item "Vintage 1940s Whizzer Model H Motorcycle Motor Engine" is in sale since Sunday, May 19, 2019.
This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Antique, Vintage, Historic". The seller is "adamz1978" and is located in Lockport, New York. This item can be shipped to United States.