318 stroker oil leak :(

Have you checked the rear of the intake back where the distributor is? Wipe that area clean with fresh paper towels then run the engine again and see if oil develops there. Its usually hard to see a rear intake leak cause they usually leak in the corners by the heads and with the firewall and plug wires in the way its hard to get eyes back there.

Hopefully you get this fixed soon. Sounds like a really cool engine....