The Pantera used a stock front-sump 351 Cleveland
oil pan. Any pan that is no deeper than the stock Ford pan should work with adequate ground clearance.
I am using a Canton road-race pan on the 351 Cleveland in my ERA FIA. The depth of the pan is fine, with no clearance problems. My Canton pan is a "T" style pan, with extensions on each side. I DID run into a clearance problem at the right front corner of the pan. It would have contacted a frame brace on that corner, so I had the front corner of my pan cut off and modified. After having it welded back up, I had it replated cad gold.
I also found a slight problem with the
oil dipstick - seems the dipstick hit a flange on the inside of the Canton pan. I discovered this when the dipstick would not go down into the pan through the original dipstick tube. I had to remove the pan, and drill a clearance hole in the flange.
What pans will fit will depend on the layout of the frame and suspension on your kit. Most Cobra kits are pretty open under the engine, with room for most any pan. Most "road-race" "T" style pans will fit, and give you sufficient ground clearance. A "drag-race" deep-sump style pan will likely get you into trouble with ground clearance.
Regards,
Jeff