I just put the RK Tek head on mine and it’s simply amazing. Bottom end is nuts and then it’s just a nice smooth pull all the way up through the RPM’s. Power was increased across the board. I dare say it is very “450ish”. If I had it to do over, I would just send my stock head to them and have it modified to accept one of their inserts. That service is only $125 vs $325 for the billet head like I have.
Sent from my iPhone using Tapatalk