Who else has C6M's in any quantity?
If you include the AC4400 rebuilds (which are basically the same as the Dash-9 rebuilds) then every major North American railroad has them.
Of the Dash-9 rebuilds, NS has almost 1000. CN & UP have some as well. And Ferromex had a recent delivery. BNSF rebuilt 20 of theirs.
The AC4400 rebuilds look the same to me, except for customer-specific details. The biggest customers are UP and CSX. But CP purchased a bunch, and even NS bought some old CIT lease units and have been rebuilding these. (3900-series.)
Lots of opportunity for this product, and one with a huge presence on the rails.
(Put me down for at least the two “sonic bonnets” - NS 4000 and 4001. I have a personal connection with these!)
Jim