do the mk4 ibiza cupra 312 capipers fit the vRS? what size are standard vrs calipers? would this be a worthwhile update as my mate updated his cupra calipers and may still have his 312s lying around.....wondered if it would be worth my while?

Standard Fabia vRS brakes are 288mm. I think the 312s'll fit if the get the right carriers for them.

Yes they will fit may required wheel spacers due to caliper size

They use 312mm discs

Would be a massive upgrade

don't think they have separate carriers, but the width of them is a PITA when it comes to getting wheels to fit