Detroit Speed C-Notch - Rear - Frame Rails - 3/16 in Thick - GM Fullsize Truck 1967-72 31018 This improves exhaust scavenging resulting QRP50-820 Windshield Size:Large/X-Large Mounting Bolt Pattern 2

This improves exhaust scavenging resulting in cooler air intake temperatures for an improvement in performance and a gain in horsepower

Pre-cut and notched pieces of 1-3/4" x

1973-1976 Ford Thunderbird

Four-hole aluminum spacer angles the carburetor left and to the rear so the carb is closer to level when in race attitude

Detroit Speed C Notch Rear Frame Rails 3 16 in Thick GM Fullsize Truck 1967 72 31018 This improves exhaust scavenging resulting QRP50 820 Windshield Size:Large X Large Mounting Bolt Pattern 2 This improves exhaust scavenging resulting in cooler air intake temperatures for an improvement in performance and a gain in horsepower Pre cut and notched pieces of 1 3 4" x