Gain clearance for headers
I ran into a problem on my 81 GP when I modified a set of 65 gto headers to fit. The drivers side fit fine after denting the floor near the gas pedal but the passenger side needed # 2 pipe rerouted. After that the headers fit fine but the only way to change the filter was to remove the header. I too went with a Cadillac filter I found listed in the K&N catalog as a race filter. Fits great and have no pressure loss, no worry about remote filter line routing . Cost was about $13.00. Any other filter I tried had lower flow capacity which made me very nervous with a cold engine.
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