Not directly 144 related but it may help:~
The EZ system
https://www.ezpowersteering.co.uk/ had been fitted to a 1950s
Riley with good results.
Apparently they can do a lot of classics, Holden is avoided in this case.. they are retail marked up inflated prices as are most of the things they sell.
EZ direct had provided a direct & knowledgeable service in many ways.
Hope it helps.
Bob.