Are these prototypical?

I know that they are in a 6-bay version, but not a 4 bay....
IM Photo:

 

Anybody?
I can't find info on this car in my GN Color Guide...

 

I don't have my GN Freight Car book handy.

From my 1/1971 ORER for car number 170742:

From series 170000-170299

AAR Car Type Code L153. Mechanical Designation "LO."

54' 6" Long.

198000 pounds.

Center flow, gravity unloading.

AND....4650 cubic feet........



Boxcab E50

 

Exactly what I have in my book. Is Intermountain pulling a Con-Cor???? The only cyl. hoppers GN bought were the 6-bay variety, in aluminum for Grain Loading.
All my 4650's don't look like that... Now if they mixed a pic, somehow, some way, and they are planning on making a 6-bay (which Bowser already does in N), I may buy one or 2.