I'm changing the oil pan on my 1973 Road Runner, 318 4 speed car because the old one developed a rust hole in it (Ohio, go figure). The engine's in the car and I have a decent, used pan and new cork gasket set. I've never changed the pan while the engine's in the car and I've never changed a small block pan. Is this straitforward, or should I expect problems?

1. Do I have to loosen engine mounts, loosen or remove timing chain cover, or just drop the pan and put the new pan on?

2. Do I use Permatex on the round, rubber end gaskets or leave them bare?

Thanks for any help. I just want to get it running again this week and drive the old rust-bucket to the B/E&A Moparts gathering in NE Ohio next weekend. It's a living, winter-beater parts car, but has been disabled the past few years with an oil pan, brake line, and ventilated floorboard.