As for IIR, this order went smoothly, and without any problems!
As for the Q300... Well I wish I could say the same.
First, there is no documentation or packing list. While this is fairly straight forward, it would be nice to have something that mentions the best way to install it. After a bit of contemplation I started from the back and worked towards the downpipe
Second, there's no mention anywhere that you need an adapter if you have a regular downpipe. So after pulling the factory exhaust, and getting pretty much everything in, I discovered I had to go and get a Grimmspeed adapter. Fortunately I was able to get to my local Subaru performance shop before they closed for the weekend. Or I would have had to pull everything and put the stock exhaust back on.
Third, the fitment is not that great. I've had the car back up, and tried to mess with getting the tips on both sides to fit equally in the openings, but the driverside is about an eighth of an inch from the bumper, and the passenger side is perfect. Looking at other installs and I see some hang down, and some are perfect. After mentioning fitment issues on a Legacy forum, it's suggested to rotate the midpipe, but with the adapter in there, the whole system is very tight and it's difficult to rotate the midpipe. I can see how messing with the downpipe and the hangers will get the tips to the same height, but I don't see how the drivers side can be pushed away from the opening. Also, the resonator section, of…