Thread: muffler size?

Just wondering whats the correct muffler size for an 05 grand prix (inlet, outlet, length). Im thinking about buying magnaflow mufflers but need to know which ones to look for.

I got this for a Dynomax Super Turbo Muffler that is direct Fit. Measurments should be the same except the diameter of the muffler. But, this should be the length, inlet and outlet sizes you need. Hope it helps.

2.25 in. ID > this should be the same size for inlet and outlet.
2.5 in. OD
21.25 in. Overall Length