From what it says there there bit stronger and have a special coating on them You can get them from TPS I'd be tempted to have around 0.3-0.4 decked with the steel head gasket it will bring compression up close to 11-1 As long as you use v-power and have it mapped it will be good And whilst your at it may as well get the bottom end balanced and have the flywheel lightened lol That's what I would do at a minimum