My brakes had a nice upgrade last week - endless mx72 pads & bronze bushes on front / HEL lines / ATE 200 fluid - and I can now pretty much now do stoppies. Question is how worthwhile it is to upgrade the rear brakes with, say, similar pads or caddie calipers? I appreciate how the front does 80% of the work but would also like to keep the car well balanced in addition to maximising stopping power. Appreciate the views of those with experience of such matters.