Hey Bob - The dummy engine is the OX-5 kit from Proctor, made for their 1/6 Jenny. If you go back a page or so you can see a post of all the parts, it's a little overwhelming! But it does turn out nice. I don't have details on the build, but it does come with instructions. I had more work than standard because I made it into a 6 cylinder instead of 8. This meant I had to recreate a new intake manifold and cut off the plastic one that was molded with the cylinders. Contact Proctor if you're interested in one, I think it cost around $50, but it was worth it. Let me know if you would like any detailed photos.
Steve