67 and later 4x4 pickups use a rear sump oilpan. Be sure to get the pickup also. It mounts to a studed maincap for support. Even better look for a pickup tube from a 391FT truck. The pickup tube has a larger diameter and a removable screen for easy cleaning. The FT pickups bolt to a threaded boss that's on just about every block out there. Canton and Milodon both sell a rear sump oilpan/pickup for $300-350. The stock pans can be had for under $100. I saw a few on eBay today.


G.