Hey guys my friend who is back rom overseas has a 2006 escalade with the LQ9

His goal is to hit the 450-500hp mark

Ive read a few threads doing the following.

243 cleaned up heads milled
long tube 1 7/8" headers
Dual 3" exhaust
TBSS intake manifold
LS6 ported throtle body

Now cam choice ive seen a bunch. He wants a good idle with good gas mileage.

Anyone sugest any builds of what to do to get this power.