Bill,
Here is the reply I got.
Hopefully this will be a good replacement.
Hi David,
We currently do not make that gear nor will we;-----------------------Instead, and we're actually getting closer to releasing it, is a regearing kit for that engine (and its cousins, such as the 0-4-0) where you pull all the factory gearing out, re-use the factory motor, then install our kit. It'll take us a while to finish it but we've made some good progress.
Thanks!
Dave Rygmyr
NorthWest Short Line (www.nwsl.com)