Does you engine have the bosses on the main bearing caps to mount a windage tray? Because the stock Pontiac tray is mounted to those bosses and will fit perfectly. They are getting scarce but are available. The stock Pontiac 301 oil pan fits all bodies perfectly and has a baffle in the pan that the oil pump pickup fits into. I built a 1970 400 with those parts and I never experienced oil starvation no matter what I put the car through. Canton makes a copy of the OEM oil pan and to cover the 301 application it has the baffle inside. Baffled pan