Need to be a little more detailed. 5-bay could be a lot of things, from a 1960's Ortner to a 2005 Autoflood III Bethgons... i.e, Coalporters, first appeared in the late 70's, built of steel. Now they are made of aluminum... Thpusnads of hoppers were rebuilt into Coalporters using kits supplied by Bethleham, aka Johnstown America kka Freightcar America)