BD boxes are 500 cdn. My 06 m7 is stock with the bd box, enlarged intake tube and a set of egt's. This sled rocks! It totally outperforms my 02 MCat 800. I run the attack 20 162" and just love it. It is so easy to turn when going uphill. I reversed it and put it in hillclimb position. These sleds run pretty hot under the hood but that's an easy fix with some add on vents. I'm just starting to play with the BD box so it should be dialed in soon.