289 Oil Pan Gasket Confusion

go one piece.

The one piece is reusable, just be carefull when removing it from an engine and don't tear the corners loose from the end seals. Even then, all that's needed is a dab of RTV sealer to fix it. It also comes with some plastic installation studs, these are priceless if you need to pull the pan with the motor in the car. Screw em into the 4 corner bolt holes, pop the gasket in place then do the same with the pan. They have a hook that hold the gasket in place while you get the pan. I also use the 80's-up 5.0 pan rail stiffeners that the 5.0's used from the factory. You can get these off any mid 80's 5.0 in a junkyard, get the longer bolts to go with em too.

i would also go with the one piece gasket. the pan rail stiffeners are an excellent idea as well. one more suggestion, get an oil pan stud kit from arp.