Finally got the intake sealed up well enough I'm ready to really drive the car around. I had some issues with between the runners not being sealed up, but it also had a gasket alignment issue. I got a standard tin intake/exhaust gasket on it and with the intake and exhaust being two pieces now it had sagged down towards the rear. loosening the exhaust manifold and shifting the gasket back up and then tightening the manifold back down seemed to do the trick.

The engine is running at a cold high idle (~38ºF CLT temp), but fired right up and is running well.
https://www.youtube.com/watch?v=6_eAOO-iBAA