Rob82 you are a straight out knob!!! Re-read what is actually said and what you came up with as responses. If you are in the tuning business and you have never tuned more less heard about ls1's making over 300rwkw NA you need to get out of the job!!!
Thats all I can really say.
I have personally built a vy ss ute with: cam, pushrods, inlet manifold, and tune makes 322RWKW, Adrian has seen the car I am refering to and I can get dyno sheets to prove this. It is in street commodores with the dyno sheet printed for heavens sake.
We are currently rebuilding this car with a stroker crank, better heads, bigger cam, more comp and based on a motor that Sams Performance have built, with similar mods, that just this weekend made 411RWKW at a nationally syndicated dyno competition, following national dyno guidelines for dyno comps, Ie stricter than your local shop trying to inflate dyno figures, Id say your comments about 2 valve heads being donkey are just as biased and stereotypical as a redneck having a go at anything japanese as a rice burner.