Not sure how I feel about marking of event cars. I don't have that many so it doesn't matter. If I recall when our club did convention cars, we had one road number for the year and one actual number. Seemed to be a reasonable way to go.
But I am glad to see that American Models has used their retrieved tooling and got the trailers out. I think Ron said the trailers were a priority. Not sure were AM got them done but you probably have a made in the USA TOFC.