Thanks for the info. The loco for sale by Wowak has a few years on it then.
Wowak's web site (link is in his post above) shows he does some beautiful model loco modifications (too good looking to be called "kitbashing"). Worth a look.
Does a 44-ton have a boiler under the cab? Then it would qualify. Maybe we ought to ask "CSX Fan" his view on that, since he owns 2 full size ones.