i punched my cats out. i dont know if they have a y pipe. the headers are a bitch to put on. im pretty sure midas wont be able to put them on.ive put on about 4 sets of them and basiclaly all you need is a welder saw zaw and a big as pry bar. your best bet is to put the headers on and then take it to a exhaust shop and have them fab up somthing.