Hey guys,
I fitted b/b discs to my H145. Mainly because I didn't have a better diff at the time - and to see if it could be done! Yes you will sacrifice both the b/b and H145 bearings in the dissembly process. Do not lose the spacer from the H145 wheel bearing if fitted - it gives the correct bearing set back. Other than that, it will bolt up. Use the b/b backing plate bolts as they are longer and re use all the b/b solid lines and flex. You may find a problem with the solid line running under the car to the flex hose joining the diff as they didn't mate correctly on my car. I removed the original fitting on the car and re - flared but perhaps others have tackled it differently?? I am using 13" wheels but it was a nightmare (!!!) even with the right setback wheel. I recommend going straight to 14" or bigger to save frustration

Benny could fill you in on the handbrake situation as I don't run one but I don't believe it is too difficult.
I suggest you use a ute diff if you can (or other H165) as it is a bit of work to change to disc rear and then want to upgrade later - try to spend only once

. The bloke spinning the yarn about ute diffs seems a bit strange - only working under load ??? A new one to me

. Good luck with the project and remember to allow some extra cash for the usual dramas - pads, machining, caliper kits (maybe) and some frosty rewards for the end of project
Cheers