So I’m assembling my new engine. Putting the oil pan on last night and I like to do things correctly, so I’m pop riviting the new gasket on like it was from the factory. I noticed on thesis’s the oil filter is on, the oil pan and original block are missing a hole for a bolt for the pan rail. No wonder it leaks! The gasket had a hole. New block has a hole and the truck oil pan has the hole. Gto doesn’t. Why? So I did what any true hot fodder would do. I drilled the hole. Check it.