You should get a repair manual for your truck to help with these type items. I guess I was posting when you were answering Bill. See above. Dude, you need a new oil pan. NY must be awful on metal. Never seen a rusted pan like that in AZ.
Drain the radiator before starting, but some will still flow out when old plug removed. Antifreeze is deadly for children or animals, of any kind ,to drink if you let it go into yard or gutter or not catch it all in a bucket. Dispose properly.


Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn