H2A Questions

[NW Modeling List]

I noticed that Broadway Limited has another run of H2A's in the works. This run will feature both 17 and 24 inch schemes as well as hamburger scheme repaints. I'm wondering was it possible to still see 17 inch lettered cars around 1960? I'd like to add some to my fleet for some variety, but I'm not sure how many I would need.
Also, what all needs to be done to a Broadway Limited H2A in order to convert it to an H3 or H2? They all seem very similar to each other.

-Evan Miller

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