You are looking at a blower I got out of a lot of parts that I have. It came off a 271 Detroit 2 cylinder engine. I don't know other options for them. This one is probably just a core it does not spin freely. What you see in the picture is what you get. As far as covers and such. I see no cracks or breaks. 

If you get it and are not 100 % satisfied with the transaction or part contact me or return it for a full refund.