Says the guy with the GYTR head lol. Any noticeable difference after the new head install? Do you think its worth it? Well definitely more power everywhere. Is it worth it. It depends I believe most people would be way happy with the stock one. I got lucky and paid way less than half for a new one. List is about $2100 or so but you get a complete head with valves, shims, buckets and GYTR cams. I could imagine a simple port job by a known person would be good and having one epoxied, flowed on a bench by the best would likely be $1,000. But there is down time to that.