high side coke cars

does any one make the high sided 3 comp hoppers for trans coke into a steel mill? CSX COKE EXPRESS

or any idea how to make some!!

forgot to add, in HO scale

Like these: http://walthers.com/exec/productinfo/932-3091

yup those are it… but
out of stock… imagine that. looks like im going ot find some 36’ 2 bays and build them myself… any suggestions on what to use for extentions?