I was looking at the MRT axle back too...but then went to local muffler shop and he did the same thing for $250 and I provided the tips because he didn't have black ones in stock - tips were $160 free shipping. While he was under there, we actually removed resonator and put in a 40 Series Flowmaster muffler. They did 2.5 inch from flowmaster back to tips. All total $650.00. If it is possible, it might be too aggressive and some drone at certain shift points 3 to 4 and 6 to 7....but it is totally different than the prior stock "Prius" sounding exhaust...you can definitely here it coming...lol