Dewayne and I have had several conversations about the Trick Flow heads and how good the low lift flow is. That great low lift flow is a blessing and a curse. The curse shows up when you put a healthy amount of cam duration into the engine. The heads flow so well at low lift that the intake charge just starts going out the exhaust.

So given that, I'd really be concerned about a 260 duration cam in an engine that is supposed to go down the freeway at 1800 rpm. (Or whatever your cruise rpm is. You can figure it out once you know your OD ratio.)

A 260 duration cam probably will not be very efficient at 1800 rpm with the Trick Flow heads. It is your car and you'll need to decide but as Dwayne pointed out, do you really want 650 hp for the track, or do you want it to run nice and smooth on the freeway at 70 mph?