Oil from Manifold?

Hello All. Need some input please. Had a 74 gold duster with a slant 6 in it sitting for an year. Changed oil and took it for a ride and noticed some oil sprayed out from the rear exaust and white smoke on idle. Also noticed oil leaking from the Manifold i guess or the head? Does it sound like a head gasket issue? Any input here will be helpful before i open up the head. Thank you

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