I bought the Greddy SP Elite on here for about $300 and installed it this weekend, here are my comments:

-Tips look great on this car. Really gives it that extra flair. I personally did not notice any irregularities in how they line up.
-Great sound on start up, very low.
-Sound kind of disappears at high RPM and sounds more like stock car.
-Super easy install. Installed with some jack stands in the parking lot. Will need 2X 14 mm wrenches.

Everything else is stock.

And if it doesn't, dealership.