PRODUCT DESCRIPTION: Rotational mass is a spec class killer; it reduces initial drive and loads up the motor unnecessarily adding heat throughout the run resulting in less overall power, because of this MIP has created a performance bundle package directly attacking rotational mass in the 13.5 wheeler class. The same successful Puckā¢ / bi-metal aluminum drivetrain that MIP is known for has been manufactured, tested, and proven for the AE B64 platform! This all in one kit comes with... MIP 13.5 Performance Bundle Package, Gear Diff, AE B64 #17050 Continue reading...