Well, this is somewhat off topic but bear with me. I've been thinking about the turbo cam. And I'm thinking too much duration on the ex. side reversion, bad. So how about tight ex duration cam with larger exhaust valves? Should be an alternatiive way to get more exhaust flow without negative effect. When I was talking to my head machinest, he said he could probably push the ex valve 1-2mm. Ideas, ideas....