There's really just two things you need to consider. Unless you go with a racing Wilwood type setup, which may or may not come with an e-brake setup, the factory drums are lighter than the factory type discs. The racing discs are rather small to fit inside a standard 15" wheel. If this car has huge tires on the back you might consider an adjustable proportioning valve to dial it in correctly. 1. Is un-sprung weight a priority? 2. Do you want to keep the e-brake setup?
