R32 rotors and calipers WILL fit inside the 17" Classix (see attached pic from dangsr's GTI.
And stock R32 brakes on a GT that weighs around 300kg less than an R32 would provide outstanding stopping power.
The biggest problem seems to be sourcing the R32 calipers (equivalent rotors are easy to find) at a non-stratospheric price. From the last time I looked, R32 front & rear brake kits were about US$2800. That was a while back admittedly, but didn't include s/s brake lines or the larger dust shields (or fitting). ECS seems to be a reasonable source for most of the bits.
And stock R32 brakes on a GT that weighs around 300kg less than an R32 would provide outstanding stopping power.
The biggest problem seems to be sourcing the R32 calipers (equivalent rotors are easy to find) at a non-stratospheric price. From the last time I looked, R32 front & rear brake kits were about US$2800. That was a while back admittedly, but didn't include s/s brake lines or the larger dust shields (or fitting). ECS seems to be a reasonable source for most of the bits.