Direction of Rear Main Oil Seal

[carsngolf]

I want to replace the leaking rear main engine oil seal in my '65 coupe with a '68E engine. The seal is a Victor Reinz #65 85 10 supplied by Pelican. The question is what direction should it go? It has a flat face and a concave face. I don't know which face should go toward the engine. An educated opinion would be much appreciated.
Many thanks,
Jerry Weiland

[cgarr]

Just like in your picture, spring is on the inside of the engine.