how would i power an athearn f7b dummy unit? it has a chassis that is ready for an engine, but no engine. so how? i know that motor pieces exist, but i don't know if a full motor is sold on it's own. so what i am really asking is can i get a motor and mount it, or do i need to put the shell on...

Hy guys, here are the last project pictures. Is a Williams E-7 dummy B&M. Nice shell but need a motor. So I adapted a Weaver RS transmission easy to play with that but not so easy to adapt into an existing frame. I start first to remodeling the trucks. luckily the williams side frame has a...