Nick Williams Performance Throttle Body 103mm for LS & LT Engines (Drive by Wire)*NEW* Nick Williams 103mm Throttle Body (Drive by Wire) Nick Williams is known for making some of the highest quality CNC precision machined billet throttle bodies on the market. This new version of the Nick Williams line of throttle bodies replaces the old 102mm LS boosted & non boosted throttle bodies. There is only 1 version now the 103mm Throttle body. Order with confidence through Race Proven Motorsports. Call or email if you have questions on