TR6 Ignition Module, Coil pack, and Spark Plug Wire Kit This is a "TR6 Ignition Module, Coil pack, and Spark Plug Wire Kit" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. Upgrade your Buick Grand National factory ignition system with this TR6 Ignition. Built... MSRP: Was: Now: $925.00 Choose Options