Charles,
They A/A Pro .67 is planned for after the .91. If production goes smoothly on the .21 and .45, the .91 and .67 will be ready at nearly the same time.
We are working on replacemnt P/L's for the MAC engines. They should finally be ready by the end of Dec.
Thanks Virgil! I'm working hard on it. It will be a great out of the box race engine. It's a big efort putting all of the production together here in the USA without using an established engine builder.
In case some of you are wondering (I've heard rumors), Dub Jett nor Henry Nelson is building parts for the engines. No and not K&B or Fox either. LOL