Here is an overview of how to do this properly and what you will need. In NSW this must be certified to be 100% legal.
This requires certification as Brembo brakes were never a factory option for my car/variant.
If a brake package is a factory option for your variant (like police brakes were) you can do upgrade without certification as long as all parts that are part of the upgrade are used i.e. bmc, calipers and matching rotors and pads.
To check what brakes were an option for your specific variant look up your RVD. Here is an example.
https://rvcs.infrastructure.gov.au/perl/44667_1166498_RVD_10Feb2016083138.cmd
Check 'service brakes for engine option' section. You will notice that for instance Calais V had a factory option of heavy duty 345mm brakes.
So, that means you could install heavy duty brakes without certification on CalaisV if you also use 27mm BMC
This one was for my car:
https://rvcs.infrastructure.gov.au/perl/44667_1163759_RVD_14Jan2016083756.cmd
To do Brembo upgrade you need OEM Brembo Calipers, OEM discs or equivalent aftermarket, correct brake pads (OEM or aftermarket) and new caliper mounting bolts.
The calipers and brake hoses and discs all bolt on with minor trim to rear dust shield.
You will also need large bore brake master cylinder (27mm) as fitted to VF SSV Redline. If you car came with heavy duty 345mm front brakes your BMC is already 27mm. 27mm BMC part number is 92282381.
You need correct offset wheel to clear the calipers. Redline wheels and all HSVi 20” wheels as well as stock Series 2 SSV (non redline) will clear these brakes.
OEM part numbers for Brembo brakes are:
Front
92276503 (front caliper)
92276504 (front caliper)
92277173 (front brake pad set)
92245928 (front rotor)
89047711 (front pin kit)
92139223 (front caliper bolts) torque 40nm + 90 degrees
Rear
92276499 (rear caliper)
92276500 (rear caliper)
92507422 (rear brake pad)
89047728 (rear pin kit)
92139080 (rear caliper bolts) - torque to 120nm
92287421 (rear rotor)
92507424 (rear pad shim kit)
Brake/caliper hoses are the same on all brakes on VF. Banjo bolt torque is 35nm. Copper washers are 1 time use.
The cost of new OEM parts listed above is $4600 and that is trade price. Retail is more !
The other option (which I took) is to buy the lot from a wreck. When purchasing from a wreck you will need a proper invoice to itemise all items purchased and note the VIN number of the car they came from. Picture of donor car VIN/Compliance sticker is also needed. Pictures of the donor car are also desirable for engineering purposes.
I used everything OEM except for brake pads which need to be new when completing this upgrade. I went with Remsa.
Front pads
0666.32
Rear pads
0434.30
You can also use DBA 4000 series rotors with this setup. Part numbers for this setup are:
Front discs
DBA42604
Rear discs
DBA42074
Needles to say it should be all installed by qualified mechanic.
The mechanic will also need to complete installation checklist that is provided by engineer and conduct standard brake test after installation.
Now how do they compare to factory heavy duty brakes ...
Same pedal feel...but probably too early to comment on how they stop before they are bedded in properly.
Certainly no initial huge difference which is probably testament to heavy duty brakes that were on it...
In the future I will experiment with DBA rotors and different pads for even better braking.
Cost ?
All up about $3600 ...parts, labour to fit and engineering.