as the title suggests
been offered a brembo gt front kit and am wondering whether they're likely to fit
the disks are 335mm i think

 

335's should fit, but it could depend on which caliper the kit uses.... i have a godspeed 335mm kit that uses the Subary 4 pot caliper, and they fit just fine.,...... the SUBARU brembo's will not fit, even though they are only 330mm,...... it's the caliper that is huge........

Ideally, if the guy offering them to you has a scoob, try to fit one of your wheels on his car.... that'll tell you for sure....