You contact him Giuseppe Starace directly on facebook. His web page is taking forever to get up and running. He even has a new version past the V2 (I believe). It includes some new velocity stacks. It houses the OEM filter but it is highly recommended to install an aftermarket filter(same size as OEM). He is now partnered with Sprinter filters which allows him to packaged deal the assembly and filter cheaper than buying separate. I have not installed the shorter velocity stacks but I intend on trying them. Tremi also recognizes his intake system now and offer various maps for the various configurations you can run. I intend on trying that t800 map back to back with my rapidbike tuner amd reporting my findings...The DP filter cover is not sold anymore. I was thinking of getting this as an alternative. Did you guys contact him via FB or is there any online store? And does the stock filter fit?