Hey there Senna, Thanks for the prompt response mate. Nah not looking at retaining the stock cross-over, I may of been unclear with my prior posts. Im happy to piss off the stock cross over pipe and replace it, but wanting to keep my airbox to avoide issues with the cops. What did your PWR cooler cost you with a replacement cross-over piece? Did PWR have one for the unit or did you have to get one custom? Looking to get my hands on a reliable cooler that will hold early 300kwts without any issues after a few hard bashes but dont want to cut/grind anything. What are the PWR coolers rated at and why did you change yours, what are you currently running now? Yeah I have been talking to Chris from Rapid, top bloke regards to teeing up a cooler and might be going the v2 setup but only concerned about issues with police re, the removal of the air box. Has anyone had any issues with this?