I own a 1962 thunderbird convertible with a new short block installed. My wifes cousin came from Toledo Ohio and took the car there. About three weeks ago I traveled a couple state to get this block from a reputable man who sells alot of ford blocks and thunderbird acessories. I trust this man becuase i have dealt with him before. When the car was delivered to everything ran good. After the relative left I noticed a few drops of oil on the concrete. This engine came with everything a short block should have to it. The next day I looked under the engine and noticed there was oil right next to the oil pan giong down the transmission cooler lines and resting on the bell housing. I looked at the driver side valve cover nothing. I felt around the intake manifold nothing. This oil was on the outer left side of the pan. Going upward where I cant see. Now some threads on this website indicated that there is gally plugs behind the engine. How often would it be coming from those plugs.The only this until I take it to a professional mecnanic this Monday is possibly questioning the seal and type of seal used. Some people say it usually leaks around the outside corners of the manifold This leaking is on the drivers side rear.Apprciate any input. Thanks Larry