Keep on thing in mind.Your dealership covering the roush kit under warranty should something happen is solely up to them.some dealerships that install a blower kit will warrant the product,car etc. should something go wrong, BUT remember one thing: if you should go to ANOTHER dealership for service etc. they can and most often will VOID YOUR WARRANTY.I know this first hand working here at Banks.We have tons of ford,chevy and dodge dealerships that sell and install our products, but often times a customer will take their vehicle to another dealer for serive because they moved or whatever and that dealer wants nothing to do with the products that are on the car and will attempt to void the customers warranty and then it gets into a BIG mess.There are also many dealers who install Vortech blowers as well and again it is a "dealer to dealer" decision, so remember just because it says "roush or saleen" on it does not mean is is covered under your factory warranty policy issued by ford!.These items are still considered "aftermarket" add ons and although both companies work directly with Ford (as we do ) they are designed to alter the original configuration of the vehicle and therefore can be subject to warranty denial...So, in short save the $$$ and get the VORTECH!