I was recently given 3 free performance mufflers. Each muffler is 2.5 inch. I gave 2 away to my friends. These are prototypes for a company that isn't out yet, nor do I know if they will ever be out. So my question is, will there be any advantages or disadvantages to running a 2.5 inch muffler on 2.25 in exhaust piping for a 2.0? If so what are they?