Like @Sofa King said the front lip extension only go on the edge of the fender. They are there basically to cover the poke of the HP Front tires. They do not extend into the wheel well any further than the wheel well lip. Right how Ford is out of their ever lovin mind on the price for the extensions, the Drivers side is about $400 and the Passengers side is (are you sitting down, really just have a seat) $1,100. This time next year you should be able to pick up a set for about $400, judging by what LRM has the Mach 1 extensions listed for.
