'71 Demon jack hook

Hook for standard bumper or one for the slotted bumper? L23-41 is #2921100 and car model V and L29 is a #2931157. Your Dodge vin should start with a L followed by 2 more numbers that will tell you the correct number. From there you might get you closer. Knowing whether you have a slotted bumper or not should get one you need with a wanted ad.