hey guy just a quick question, so i have a 3 inch y pipe, but the pipe that's welded from my y pipe to muffler is just a little bit small (2.5 i think), where can i get that 3 inch pipe it has to be mandrel pipe. there isn't any places by my house.you think that have this smaller pipe is creating restriction and I'm lose hp? i want a full 3 inch set up.