To be honest mate, there is no easy way to upgrade the calipers on the E series cars.
You cant go bigger discs without substantial modification.
your best options would be DBA Slotted rotors and a decent set of pads.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.