Hi, My mate has one of these (4 cylinder lister, Plant No 15388NA, Engine No 6013414, Spec 38429), its not got the housing, just the gennie on the 5 ton trailer. He has it running on his small holding, but is looking to up-date his power supply, What sort of money would he be looking at for one of these & where would be the best place to out it... Many thanks..Havengore