Thanks for your time and efforts on my behalf. Really do appreciate it.
So if the FA/FB won’t work I wonder what the wheel base on an Athearn F unit is? The newer ones with the plastic side frames? I could always switch out those for some Alco ones …… if the wheelbase is correct.
Question now is, who has an Athearn F unit or  possibly a Bachmann F they would be willing to measure?   

Why dont you not waste the money and just find an E-R models shark? why swap the chassis? it wont work. im sure you love your old sharks, you have fond memorys, but its not worth it....

accurail offers freight car kits with painted freight cars with data applied,  www.accurail.com

May we please have a Board for DC.

My suggestion is that classifying by "Scales" is limiting, where as it would be more flexible to classify as "Interests"

impressive

new tooling! with sound would be great!

all my locos have a "5 pole can motor" what are the poles? where are they, what is the armature? why is the 5 pole better than the 3 pole can motor?

and why are fly wheels nessisarily? spelled it wrong, but dont know how to!!