This is a set of "Custom 8mm Taylor Spark Plug Wires for LS Coil and TR6" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. Taylor Spiro-Pro spark plug wire sets are the finest high performance street and race wires available today. They offer maximum firepower without radio interference, provide up to 10 times less resistance than standard resistor core wire—and are a must for electronic ignitions, on-board computers, stereos, and pit radios. Other features include: a 100 percent silicone inner and outer jacket that provides heat protection up to 600 degrees F; low-profile silicone boots with grips; and double spring locking spark plug terminals for a secure connection. The wire sets are available in a variety of boot and distributor terminal ends, assembled or not, and more than a dozen vibrant color options. Order the universal or vehicle-specific set that best suits your application.