Mine was installed on the fender next to the blower motor. You can get the most bang for the buck if you just sell it on ebay. I had no difference in performance with or without it. Just keep the MSD sticker to put on one of your windows and no one will ever know the difference.
Thanks for the help :looser: I have done the research and I think it is a worth while mod. I am not installing this on a stock 4.0L, and I am running slightly rich right now and multiple spark will help me out.
