I wouldn't boost anything higher than 9:1 ... 10:1 and 11:1 are both useless for dependable boost. Sure, you might get it working knock free, but that won't last for long. Besides, even at 10:1, I highly doubt that you could run more than 6 psi without knock/detonation. Is all that trouble work 6 psi? I don't think so since you will only be satisfied with that power level for about 2 weeks and want to up the boost. I say do things right:
2001 3.0 longblock
forged rods
SHO bearings
low compression pistons
As for the 3.0's upper intake not fitting under the hood ... modify the hood while you are at it
