The booster is bolted to the firewall and the master cylinder has 11/16 stamped onto it.

The caps on the reservoirs on the cylinder have Nabco stamped on them.

The brakes on the struts seem to be a very simple disc setup.

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You ute has non-stock configuration. So we cannot say which master cylinder is right.

Which booster does it have - what are the writing on it?

The size of the master cylinder is usually cast into it. Is it a 13/16?

1117 and 1178 bolt straight to the firewall and run no booster
1117 is drum all round too

Unless you mean your bendix booster is remote style and boosts just the front brakes

If its firewall mounted and the master bolts to it... no these won't do

What brakes are attached to the struts ?

Pics ?

Gudday

I just bought a 1200 ute with an a15 engine.
I have plans to refresh the running gear and am starting with the brakes.
The ute has discs on the front and runs a bendix brake booster with a tandem master cylinder which is very tired.
Through researching this site I found that brake master cylinder jb1117 would be the right replacement for this and ordered one from a online brake retailer.
The brake shop sent me an email back with an image of their catalogue staring that part number jb1178 would be the right part for a drum disc brake setup.
Before I confirm the order I thought I would throw the question out and see if anyone has had this same situation.

Any advice would be appreciated.

Apologies if this has been covered previously, I did a search but couldn't get a solid answer.