Pypes Turbo Pro X-Pipe System Header-Back Exhaust System - Dual Rear Exit - 2-1/2 in Diameter - GM F-Body 1967-69 Ignition System Wiring Harness Because there are fairly wide

Because there are fairly wide tolerances in factory bolt holes

The phenolic material used to manufacture these spacers insulates your carburetor for cooler fuel

Program two rev limits and set a step retard for nitrous use

2nd Ring Groove Thickness: 1/16 in

Uses Holley Water/Meth solenoids specially designed and calibrated for use with this EFI system to allow the user to enter Water/Meth flow as a percentage of fuel injector flow for Water/Meth tuning precision unmatched in the industry

Pypes Turbo Pro X-Pipe System Header-Back Exhaust System - Dual Rear Exit - 2-1/2 in Diameter - GM F-Body 1967-69 Ignition System Wiring Harness Because there are fairly wideProduct Description: Exhaust System Turbo Pro X Pipe System Header Back Dual Rear Exit 2 1 2 in Diameter Stainless Natural GM F Body 1967 69 Sold Individually Pypes Performance Exhaust supplies complete mandrel bent, performance exhaust systems for American performance vehicles ranging from the 1950s to the present day. One of the principal ways of getting a lot of bang for your performance buck is to replace your cars compression bent exhaust system