Is this really a 480c? the cylinder head looks like the 300 series

I want to add a backup compressor, and found this one in the area. Little skeptical whether its a 480, and if it is, do you think the price is fair? Thanks so much

http://minneapolis.craigslist.org/hnp/pts/2510935888.html

Mike

N/M figured it out, a 450c, Thanks

Mike

There selling some new Viair 480s dual packs cheap on ebay if your still looking.