I have a 2002 4runner and need to get a muffler for it. Mine recently cracked. Looking at getting either a flow master or magnaflow. I want to make it a little bit louder but not obnoxious. Im thinking of 40 or 50 series. I know i need to get center in offset out. Do you know the size i need to get? 2.25 in or 2.5 in. Thanks