I have a Bachmann 0-6-0 Pennsy  with tender and smoke, but My hobby store just told me it is too small to install the Dcc conversion Kit.
You obviously have the knowledge about this sort of thing. I was directed to this site from another forum to see if you might suggest the type of decoder I might install. Do you think it is just too costly for the hobby stores mechanic to justify the installation on this unit? can it be done ?