will the rear camber kit sort the problem off my back arch catching on the tyres when going around corner quickly or will I have to the arch rolled ?
I get asked this quite often...
The answer, sort the issue where the problem lies.
If the wheel are catching on the arch, then roll the arch.
Don't try to make other parts of the car do "something" to compensate, that is like putting a plaster over the problem.
Not to mention you end up with "other" problems when you start trying to compensate...