Hedman Headers - 1.75 in Primary - 3 in Collector - GM LS-Series - GM A-Body 1968-72 - Pair MT120BK #4277 are designed to clear

#4277 are designed to clear most roller rockers on factory cast iron and Edelbrock cylinder heads

The Multi Input controller has an easy-to-remove plug covering the programming dipswitches and a programming legend on the back for the 0-5v and frequency based settings

1956-1957 Oldsmobile 88

Adjustable length kit contains all the necessary components for pedal engagement and height adjustment for most common types of installations

Comes complete with the patented award-winning LC-2 Wideband Controller

Hedman Headers - 1.75 in Primary - 3 in Collector - GM LS-Series - GM A-Body 1968-72 - Pair MT120BK #4277 are designed to clearHedman Hedders Hedman Headers 1968 72 Chevelle El Camino (And Related A Bodies) Ls Swap Headers; Auto Transmission; 1 3 4" Mid Length Tube; 3" Ball Socket Collector Uncoated Hedman Hedders has been manufacturing quality headers and exhaust components in the USA since 1954. Hedman Hedders Hedman Headers 1968 72 Chevelle El Camino (And Related A Bodies) Ls Swap Headers Auto Transmission 1 3 4" Mid Length Tube 3" Ball Socket Collector Uncoated Vehicle