Basically, the conversion info that you need is found in the Datsun 910 [Aussie Bluebird] workshop manual.

You need to dismantle your rear end by removing the rear axle shafts. Next, remove the wheel bearing retainer & the wheel bearing itself. This will allow you to remove the brake back plate.
The only part you keep here is the axle shaft. You may re-use the bearing, but would you want to at this stage?

Next, you simply refit the disco brake back plate, just like it says in the manual using a new bearing [preferred] & new retainer.

These brakes use a floating calliper, so they need a flexible hose from the calliper to the axle. This means that you will need to weld a mounting bracket for the hose-end to the axle housing, just like in the donor car, & shorten your brake pipes to suit.

Refit the axle shafts to the housing, fit up all the brake parts after making sure that they are all in a serviceable condition, bleed the brakes & you're away.

Well, that's basically it, ..... basically, .... but you will need to determine that the master cylinder is of a suitable bore size for these brakes, & you will probably need a brake booster to keep pedal pressures within acceptable limits, & if there is a proportioning valve in the system, then a few tests in a controlled environment to ensure that one end doesn't excessively lock up before the other would be a good idea.
Actually its a good idea to test anyway even if you don't have a proportioning valve, .. because, depending on what front brakes you have, you might need one.

See, easy peasy

can anyone tell me anywhere that i can get conversion info for the trx brakes

Show me the money and they are yours whenever you want to pic them up.(within a reasonable amount of time)

ill take em off you just dont know when ill be in brisvegas next. Im in toowoomba

or just cut the axle off after the bearings....nothing an angle grinder cant handle

these will also fit late h145s(120y ones) h150s and h190s

people wont use the axles for the conversion.... so why not cut the bush the holds the wheel bearing off with an angle grinder and just send the backing plates?

Im not sure if aust post will take them as they are, since they are attached to axels.
But they could probably be couriered. Not sure how much though.

hey mate im in syd n have a 1200 ute that i could use the brakes for. are u willing to post them down?

These brakes will fit any of the H165 rear ends. Where you stick your rear end is up to you, but the H165 that comes from under a 1200 ute is easily installed under a 1200 Coupe.
Not a direct bolt-in, but quite close.

will this setup suit a coupe?