hi i am planning to put the GTi-R brakes on my micra, after i source a super s rear axle. will i need a bigger brake booster? if so is there one for an easy conversion.
to fit anything bigger then the gtir calipers you will need the stub axles from a jdm k11 or sum custom brackets, as they are different. 2nd. no you dont need a bigger booster if you do the rear disc conversion and gtir front calipers. if your going to use a bigger one, modify a rnn14 one to fit into the k11. dont skimp out on the gtir brake upgrade either. use new pads, and new discs. rda/ebc make some good ****, and is very reasonably priced as opposed to dba/etc.
the primera gt brakes are 280mmm diameter by 22mm thick and they should bolt straight on ( at least i hope they will as i have a set coming for mine! )