Compatible with stock floor shift linkage only; intent to provide column shift operation will require the use of a Lokar, Speedway Motors or similar column linkage/cable shifter assembly that deletes the stock lower frame shift linkage parts in the area of the collector. Due to incompatibility with stock spark plug wire heat shields, aftermarket spark plug wires with 45° boots are recommended to be installed with these headers The use of header wraps can cause the header tubes to crack or rust due to excessive heat and moisture bui Do not use header wraps; they can cause header tube cracking from excessive heat or rust from moisture build-up and void the warranty. Breaking in an engine with ceramic-coated headers can damage the coating and void the warranty. Use cast-iron exhaust manifolds or old headers during engine break-in to prevent coating damage. Ceramic-coated headers require several heat cycles to fully cure before withstanding extreme heat. For additional information about ceramic-coated exhaust products, call Hooker Technical Service at 270-781-9741.