Nick
For the most part I've been silently watching your progress on this car and to say you've got talent and perseverance is putting it very mildly.
Couldn't help but laugh at your feelings towards 360s, particularly when they're really just "bigger" 318s. Also your comments about it leaking oil everywhere.
I've had a look at your pictures on photobucket of the new 318 for your car. I spent 42 years working in engine plants in Windsor so I don't think I'm blowing smoke when I tell you that your love for 318s may be put to the test by your paint job, of all things on the new 318.
Before you get everything all hooked up on the engine, I very much encourage you to clean the paint off of the hose fittings on the water pump, the thermostat housing and the exhaust manifold mounting faces on the cylinder heads. You can have brand new hoses, properly tightened clamps and perfectly clean surfaces, but if you're trying to seal a painted surface, check out the website nevergonnahappen.com
The manifolds were originally mounted with no gasket so if your intention is to keep that stock as well, you'll need to remove the paint, and lightly run a mill over the joint faces of the manifolds to square them up again. Even if you're using the manifolds that came off the engine, they won't go back on and not leak. Might not be anything blatant, but there'll always be a little murmur that may drive you nuts trying to find.
Keep up the great work and I'll look forward to seeing your car in person, if not at Carlisle, then at New Hamburg.