Unless you can find an universal style that you really like, otherwise, I will go for the complete system by Greddy. I have it on my car (they said probe only, but you can put on the MX6) and I love it. The quality, the look, it's one of the best. Since mx6 bumper is a bit longer than Probe, you can take it to the shop and do a 2" extension which is what I did.(but you don't have to)
It should be in your price range and it has 2.75" piping.