I gave some misleading info, I didn't replace the valley pan but I forgot I clearanced the one I have. Just had to tap the bottom of the pan baffle a bit with a small hammer. Not much, took about three minutes. Forget if it was the drivers or passenger side, I'll try to find a pic to show you.
Mickey's idea about a how to book seems good, Rocky Rotella has one "how to rebuild Pontiac V-8s".