Rex,
Actually I think the answer could be yes.
You see, the "J" was approx. 109'-2-1/4" long pulling face to pulling face. That equates to approx 27-5/16" in 1/4 scale.
The K2a was approx. 100'-11" or roughly 25-1/4" in 1/4 scale.
So the Williams "J" is closer to the K2a in length, but still 3" short if the 22" length they give for the model is accurate.
I guess what I'm asking is this...would the Williams die-cast "J" make a better model of the K2a? With it being off anyway, would putting a 2-wheel trailing truck on the engine make it look more like the K2a than the J?
The J engine was 61'-2-1/2" long (15-5/16" in O scale), the K2a engine was 53'-9-5/8" long (13-7/16" in O scale). Anybody know how long just the Williams engine is (sans tender)?
Another crude way to put this is, as long as it's wrong would it be better suited to represent a K2a?
OR
If I slapped a 2-wheel truck on it would anybody care???