changing the oil pan gasket?

[Chevysucks]

My friend is buying my stang that is in my sig, basically the only thing that it needs is a oil pan gasket. He wants to put a new oil pan on as well. He called a local shop and they said that they would charge 600 dollars to do the job. That sounds outrageous. I told him that you probably just have to take off the intake manifold and bolt an engine hoist to it to keep it in place and drop the k-member then replace the pan and gasket.
I was just wandering if this is the right proceedure and how hard it is to do. And if it is not the way to do it then what is and how hard is it and how much estimated time will it take?