Really interested in you porting my 2005 head. Few questions and i would appreciate anything you can tell me. Either way i want to get my head ported. I ride at 6500-7000 elevation. 95% sand dunes, like to hill climb and the occasional race I weight 195, rune 21x12x8 7 paddle haulers bike has maybe 50-60 hours on it. Current mods are HRC jetting, uni and a venom full system. Question #1 is the CW 480 13.1 kit worth $525.00 or should I stick to SS/SB and go 13.1? Question 2 Do i need +1 exhaust valves? Question 3 I have a $1200 budget what route would you go? I have an FCR and the adapter ( I bought from you last year) that I want to have bored and I have a HC2 neither are installed. Thank you for anything you are willing to share. Sorry for such a lengthy post