What size engine for the online/Youtube EC?

I had previously mentioned I'd be in, but I'm in NC as you know

Since many are in the states that could participate, J. Robb opened it up to mail in results and the honor system. Since there’s no monies or prizes involved, I figured I’d throw my hat in the ring and wonder who else is in on this run.

So, I guess I’ll start ordering the few parts I need to do this for an engine I’ll use later. Though I’ll re-cam it for a street car later.