What disk brake upgrade for a 74 duster, not Wilwood

yeah I have an RT charger with webers and it had worn out and crusty VH Kelsey pin slider 1 pots on the front with 9 inch drums on the back

short arse car. light in the rear little overhang compared with a dart....The rear would try to overtake my right hand shoulder in a massive broadside skid if i hit the anchors in the wet

after visiting the centre of a rotary/roundabout, ending up like a display or piece of art on the grass in the middle for all to see, near work one night, i decided enough was enough

i took the RT/ VK valiant (under the dash hidden behind the sound deadening) proportioning valve
fitted it
new tyres all round
and i swapped to brand new old stock VJ calipers which I prised out of the hands of a holden dude.

i can now use both feet on the brake if necessary(not been necessary) :) and the car pulls up true

the same could be achieved with a good quality adjustable bias from any local or US source of good parts.

switch off rear and then add in until breaking performance is too your liking and car doesn't scare you by trying to turn round at inappropriate moments.
O that makes sense, yep my hq holden used to do that, try and over take its self if on the brakes hard. Body work on the duster nearly completed and will have it back soon to start on all the suspension and running gear. Most of it is sorted, just figuring out how much to take off the diff is the next step.