66 Barracuda 273 Intake Manifold options?

Hey all!
You all have been a huge help. I ended up getting the factory manifold milled flat at a machine shop. The Housing still leaks a very tiny bit. Funny thing, when i took the new housing off (after i found how bad it was leaking when i made this post), the housing was warped. I filed that flat after having the manifold milled.

Now that its only leaking slightly, I may tackle this after it gets slightly worse, its only seeping right now.

I may do the method AJ/FormS stated. "7psi cap and studs in manifold" also the Thermostat gasket that Dana67Dart linked.