GM Performance Parts recently unveiled the first C.A.R.B. certified, EPA Emissions legal late-model engine swap for hot rods and muscle cars. We talked with Bill Martens about what the E-ROD kit consists of, and how GM was able to make this 430 HP LS3-based engine package be cool with Johnny Law. The key is the completeness of the kit, which comes with everything from the engine to the catalytic converters, vapor canister, and a special calibration in the ECM. That's right, over 20 mpg, catalytic converters for clean air, and 430 legal horsepower.