Detroit Speed C-Notch - Rear - Frame Rails - 3/16 in Thick - GM Fullsize Truck 1967-72 MT650BK Machined Ports: These manifolds have

Machined Ports: These manifolds have both the inlet and the outlet ports machined for a smooth transition and optimal flow path for improved throttle response

The Kit Includes: Billet Top Hat with ORB-06 ports

1-1/2 in Diameter Tube

7L LT1/LT4 V8

Detroit Speed C-Notch - Rear - Frame Rails - 3/16 in Thick - GM Fullsize Truck 1967-72 MT650BK Machined Ports: These manifolds haveFits 1967 1972 C10 with truck arms and coil spring rear suspension only. This kit also fits some 1967 1972 GMC C15 trucks, but only if it had the factory optional truck arm and coil spring rear suspension. 100% Bolt on product. Cutting Required Provides frame rail clearance when lowering your ride height Improves frame rigidity at coil spring mounting point 3 16 inch thick steel construction Includes C Notch brackets, bump stops, mounting hardware,