I have had this aircompressor for years on a service truck we are selling.  It runs great and pumps air like is should.  I think the gas engine is a Kohler in the 13hp range.  It pumps a lot of air.  I think the tank is around 30 gallons. Electric start.  As far as I can tell the compressor may pump around 23cfm.  The compressor (Model HGR5-3) itself is a $2000 componet, the total package is around $4000 new when I look them up.  I am firm on price.