Another D/Dart 275/273 question???

I have built my 273 from 65, its a commando. Well I have put a camshaft as the 340s, big valves 2.02/1.60. OpenAir intake with an Edelbrook 600 on the top. HP exhaust with 2.1/2" dual pipe with X-pipe.
Here is the teoretical result.

As soon the summer comes I will see if it is correct :glasses7:

That's one of the main reason I want to build a 273 is the flat hp peak I think will work great on a road course where every 360 or 408 I put through the dyno sim drops off rapidly after peak power unless use put on 300+cfm heads sure they make more torque but I don't care if I have to drive around with 5.+:1 gears.