Oil Leak???

I have a stupid question about an oil leak I have on my 49 F1. I knew when I got it that it had an oil leak, but it looked to me to be coming from the filter (bad seal, or cross thread, or warped...) but today I pulled it out of the garage to get a good look at it, and it seems to be a bigger pain than I was thinking. It looks to be coming from the intake near the dist. Is this something that is some what common for a 390 big block ford? I know the motor was just rebuilt and has about 150 miles on it could it be he twisted the gasket or bent the intake maybe? Just looking for some thoughts.

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thanks for the info, one more question the guy that had it before me said in every hot rod he has built he always used 0w 30 oil. he said he always has, does that sound right? and what is the reason for that?