How long is a slant?

It might be possible to make the custom wheel for the distributor, it would have twice the teeth, and two missing teeth. 72-2 @180 deg. So the waste fire operation would work, where it emulate two crank turns, per single distributor rotation. I have done similar using 2.2L mopar Hall distributo, however with fewer teeth. They use a Hall vane sensor and cylinder tabs for triggering.

The trigger rate at high rpm may exceed the Hall speed capability, or target trigger requirements. The normal use is 4 tabs not 70. Test first.