Wouldn't recommend an OEM
oil pan on a Cobra. Car corners, accelerates, and brakes too violently, and will uncover the
oil pickup.
Wouldn't recommend a cast aluminum
oil pan on a Cobra. Car sits too low. Only 4 - 5 inches of clearance. Cast aluminum doesn't dent like sheet steel, it cracks.
Have the Canton 9qt Road Race pan. Standard Fel Pro 4 pc gaskets with a bead of RTV on the corners. No leaks with 11K miles on the car. And, why installed in the first place, no oil pressure loss during acceleration, braking, or cornering.
That being said, the Road Race pan did not go in without hassle. Got a windage tray from Ford Performance Solutions that was made by Canton. The crank oil scraper on the pan pushed the windage tray into the connecting rod nuts. Had to remove about 1/3 of the crank scraper from the pan, and clearance the windage tray. Oil pickup hung up on oil baffle, and needed clearancing to get pan on/off. Good exercise for die grinder.
Nothing just "Bolts on" to these cars. Every seemingly 15 minute job takes 2 weeks. But if you don't do it right, you'll just have to do it over again.