We have looked into the Buick GN application. It is not a straightforward application. The big issue is the ignition module. The Cam/Crank sensors are routed through this module and then to the ECU. There is also a 5volt trigger that switches the ignition from cranking to running. The ignition control unit on these cars is easily damaged and they are not cheap to replace. So at this time we don't have any solution to running this igniton. There are a couple of people out there running an EMS on the Buick, but they are not using the stock ignition system.