N&W S, S1 or S1a

[NW Mailing List]

I noticed that the S 0-8-0 locos had long or short tenders.  Is there rhyme or reason for it...S1 had long and S1a were short for example.
I am heavily kitbashing a LifeLike 0-8-0 so would like to know which number to make it as it has the shorter tender...
Already has sound so not inclined to lengthen it...not that heavily kitbashed!
 
Thanks,
Mike Shockley
 
PS Hope to bring it to Roanoke for the convention.
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