The Bachmann Anniversary Edition is a 10 Wheeler built to a scale of 1:22.5. 

I need a larger looking locomotive to haul my 50’ passenger cars and I need it to look closer to 1:20.

I have a number of drawings and I printed these out to full size in 1:20 scale to allow me to make the necessary modifications.

I decided I could NOT hope to replicate this to a full 1:20. For one thing, I decided to leave the wheels and chassis as is, thus making them a bit smaller than needed.   Also, I really didn’t want to try to replicate the shape of the ET&WNC boiler.

So, I’d use the ET&WNC as inspiration - but I’d freelance a new 10 wheeler in a larger scale.