I used to have a Mustang before I purchased my '91 Explorer XLT. One of the mods done on my Mustang has to add an aftermarket ignition system. Has anyone added one to their Explorer? The distributorless ignition prevents me from using the same system I had in my Mustang. Is this mod even worthwhile? I know that MSD is marketing a system MSD-DIS-4 for 6/8 cylinders engines. Has anyone tried it or any other aftermarket product similar? I thank you in advanced for your feedback!!