Australian build 351Cleveland engines what are bought by DeTomaso and used into a few later build Pantera's , GT5/GT5-S , have a Australian produced Bosch distributor , those ara electronic like the Duraspark , but not so big.
I believe the Australian series 3 Bronco's 351 Cl use them also.
the distributor cap is not intercancable whit other US caps .
the dimensions are almost the same as the pre Duraspark ignition .
I have seen those for sure on 3 later build Pantera's .
Simon