Years ago I detailed up one of those TM double-sheathed boxcars with the Dreadnaught end, as a stand-in for a Lehigh Valley '24 ARA double-sheathed boxcar. The discrepancy between the 3/3/3 end, and the correct 4/4 (I think it is), I just ignored.
<sirens wail> 

Al Brown, Melbourne, Fla.