Various suppliers have conversion kits like this that convert the Purolator/Teclamit filter head to take a spin-on hanging filter. (Thomas Gunderson) The evidence suggests that both the factory spin-on filter heads below will fit the earlier engines as a direct replacement.

12H2244 Teclamit inverted replaceable element, November 1967 to April 1970. Bypass valve no longer fitted, but note the anti-drainback tube now the filter is inverted.

12H3273 inverted spin-on cartridge, March 1970 to September 1973 and February 1974-on with oil cooler hose adapter. No bypass valve, but anti-drainback tube.

12H4405 hanging spin-on cartridge, October 1973 to January 1973. The bypass valve (left) has reappeared.

Inverted spin-on filters need an anti-drainback valve internally to prevent the filter draining when the engine is switched off, which delays oil reaching the bearings on start-up. Hanging filters don't need it, but I'd expect all good spin-ons to have one. Having said that not all do, and some are very poor quality. The valve can be seen through the inlet holes on this Mann 916/1 filter:

Dismantled the valve can be seen to be a cupped disc sandwiched between the end-plate of the filtration medium and the end-cap of the filter: