it's a MUST to have the block drilled and tapped professionally prior to installation

valvetrain

Upgrade Support: Seamlessly accommodate performance components like larger injectors or turbos

They are designed to replace BMW part #11247646892

The intercooled S65 G1+ Supercharger System produces a massive 180-220whp gain from stock depending on exhaust system and methanol injection used

Powerflex Polyurethane Suspension Bushings, BMW E63 / E64 M6 Diagram Reference - Bushing Type:3 - Front Sway Bar Bushings & Plate Kit - 29 mm it's a MUST to havePowerflex Upgraded Polyurethane Suspension Bushings for BMW E63 E64 M6 6 Series Models. Over time, OEM rubber bushings wear from constant movement, heat, and exposure to road debris. This wear and tear can lead to increased play in the suspension components, affecting handling performance and ride quality. Symptoms of worn bushings include increased body roll during cornering, excessive vibration and noise over bumps, and less precise steering feel.