i've had the F-Sport exhaust on a 250 and a 350 and i love it's deep growl. no loud drone at highway speeds either. it's a great exhaust - no regrets

 

True what everyone here is saying as you'll need a mid-pipe section either brand name or custom. i went the custom route with my tanabe MT axle back and dont regret it one bit. low tone at around 1000k-3500k. Let me see if i can upload my video clip.[URL="http://youtu.be/lknlPTVlZxw"]

 

 

Usually other members will tell you to use the search function, but I'll help by posting some of my videos with the F-sport to help you decide.

 

If you are going to get a tanabe consider the m2 exhaust its almost half the price and it is a clone of the tanabe. I changed my m2 to a used f sport exhaust and it was the best investment I made on my car to date. Everytime I drive it now it puts a smile on my face.

 

I did the f-sport (engraved) on my 07 IS350 a couple years ago, completely satisfied. Glad I just did it right the first time. Not too loud, but loud enough to be satisfying.