I was thinking that. Unfortunately my truck did all three in order lol. Rear main. Fixed for a bit. Oil pan. Fixed it. Intake manifold. When that happened it ran out on top of my trans. You have to pull the plenum off and jack engine up to do pan gasket. Its a PITA

 

And that Y pipe is a bitch too. You have to remove some of the exhaust to get clearance or cut it and reconnect with flex pipe. To add to it, by lifting the engine, you still don't get clearance to remove pan until you stick your hands in there and remove pickup and oil pump and drop them in the pan.

 

Thanks for the help so far, now for another question. Does oil stop leak work? I was thinking of doing this to save money

 

Stop leak is at best a temporary help for seeping/oozing leaks like valve covers, worn rear main, maybe oil pan, etc. It just slows it down a little for a short period of time and is not meant for permanent repairs. Might help and might not.

 

Bad gas caused my 302 to tick.