It's going to be one heck of a birthday cake, but MSD Ignition [www.msdignition.com; (915) 857-5200] is turning 40 years old in 2010. For the last four decades, MSD has been at the forefront of automotive ignition solutions and has provided the spark for untold thousands of engines from street cars to mega-horsepower NHRA race cars. To celebrate this milestone MSD is going to be offering a special 40th anniversary MSD 6AL ignition with a replica housing of its original ignition system. Limited to 4,000 units, each one will be engraved with its unit number as well. Happy birthday MSD!