Five Star Avex Rivets: Large Head - 1/8" - (500 Box) Thermostat Housing Its 103mm throttle body opening

Its 103mm throttle body opening can be port matched to 105mm

GMC Sierra 1500 HD 2003-2001

Fuel Rail And Cover Kit

Dual 1/2 in NPT Female Outlets

Mount a dial indicator in the center for deck height or in each end to check piston rock

Five Star Avex Rivets: Large Head - 1/8" - (500 Box) Thermostat Housing Its 103mm throttle body openingFive Star's rivets grip better than pop rivets because they expand in the hole to prevent loose body panels. They are also easier to remove because they do not spin while drilling. Five Star Race Car Bodies is the most recognized brand of short track body components in the world. Five Star designs and manufactures parts for Circle Track and are the leading producer of Fiberglass Bodies, Aluminum Bodies, and Steel stock car bodies, Five Star Race Car