you can use 17s for break-in, i would recommend to stay below 5K though, as they will lean out up top!
the svt injectors need a new fuel rail, they are cheap, i paid like $25 shipped or something for mine. keep in mind you gotta change the connectors for the injectors too!
i ran 19s with no tuning for a little bit, the car will throw a CEL for running rich!
