I am new to HOn3 & HOn30, having been in HO for 20 yrs. I am not able to locate any Shay's or Climax's for logging oper. in HOn3 that are reasonably priced. I do not wanr sound or DCC. Also want to know where I can find the N scale power units to install into HOn30 conversion kits. Several articles refer to using N scale diesel mech., but give no brandnames or sources. I am trashing the HO roadstock for a smaller HOn3 layout. The HOn30 engines are for a portable layout I plan on taking around to the hospitals for the kids. Any help in locating HOn3 engines or logging cars or HOn30 Engines & logging cars would be appreciated! One last favor- has anyone explored the possibilities of "cutting down" HO cars  into HOn3?
I have saved several logging cars in HO that I want to try this on. I am hoping for having to change trucks & couplers only.