The red one does (oli's) - they grey one (tims) has Gaz
The difficulty with converting your own rears rightstuff is the coilover conversion tube bodies are generally too big (mm wise) for the standard rear ford strut. If you can get them to fit you will then need to source a STEEL top mount as the aluminium one supplied will be no good (bottom spring pan will be fine in aluminuim).
This is a mod we did ages ago (early 90's) which worked for a while, but only by running it you find you need STEEL top mounts and then the strut tops will need strengthening with extra welds.
I can see your after coilovers for the rear on the cheap so you can get a 4 link kit which will deffinatly sort out your camber issues.
My (old) full rear set-up....
Brom does do all the adjustable stuff yes, and so do we
Ours come powder coated, and all the arms are plastic sleeved for protection, and use race quality rose joints (as Brom will im sure

)
PS.
I run 40mm inverted pistons on the rear as can be seen through the spring, I think the Gaz are 10 or 12mm. If you convert your own with coil over sleeves you will also have 10/12mm rods.
For highspeed cornering or fast road we are not too keen on this from testing