racingbrakes makes an adapter bracket but its not designed right. I was thinking about designing a new bracket for guys to do this. I have a 225mm mount calipers with adapters to run 380mm on my car but would be nice to be able to do it properly with the 142mm mount calipers.

 

It would be ideal if GIRODisc or the like can produce a front & rear 380mm upgrade kit using the stock callipers. If it is just a few $$$ more than many would consider doing it when replacing there discs/pads. For me I would do it for the aesthetic reasons alone.

 

the rears are easy, just spacers and 120mm bolts. The front because of how the caliper mounts are angled makes it more complicated.
I have a possible way to do.it properly but need to get a 142 mount caliper in hand. I'll work on it though I'm the future here.

 

Are you planning on selling a kit?

 

yes I would be. I already make 330-350mm kits for 996tt/c4s and 997c2s,c4s.
working on cayman, standard 996/997 kits and I'll work on these kits as well.

 

Cool, how long you think you will need for the kits to be ready for sale?

 

have you make an adapter for the 4 piston calipers to drive the 350mm?