the smallest size inlets they have for the bullets is 2.5", but isnt the stock catback tubing 2.25"? if it is, should i use spacers, or a peice of reducer pipe to accomodate the change? lastly, before buying the mufflers, will i need to order any piping? just wondering because the stock mufflers have off center outlets and inlets, so i dont know if the the bullets will reach the stock tubing locations.