Length of N scale GE Dash 8-40CW vs GE Dash 8-40C

[edbreyer]

Hello:

Can anyone tell me the length (front to back railing is fine) of Bachmann's GE Dash 8-40CW and GE Dash 8-40C?  I'll take a relative comparison to a Bachmann SD45 (which I have) if anyone knows that. 

I'd like to know before I buy one or both and can't get to one in person.  I'm trying to assess how a longer locomotive would look on my layout. 

Thanks in advance!
Ed