I've just uploaded a vastly updated version of the PRR K7a cattle car to my website. It is now fully TS13 (14???) ready, standalone with my new sounds, and also looks a bit better than before.
Also new are updates for the 36' truss-rod frame boxcars and the 30' and 40' truss-rod frame wooden gondolas. No changes to the models in these two cases (they had already been updated), but I added my sound pack to make them independent from the Kuju sounds.
Links to the download pages are in the text above, or visit my main page: http://golden-age-rails.com/index.html
Hope you'll enjoy these updated cars, sorry that it took me so long (over a year!!!) to get the PRR stock car back online.

Michael