I think that is the route I will be going to, LS6 it is. I found a decent setup on gmpartsdirect.com

DESCRIPTION: INTAKE MANIFOLD Kit - GM PART # 88894339
This is the Gen 3 fuel injection manifold used on 2001-04 RPO LS1 and LS6 Corvette/Camaro/Firebird engines. This kit includes the intake manifold, intake seal P/N 12560251, intake manifold gasket kit P/N 12533587, throttle body seal P/N 12552542, map sensor P/N 16212460, map sensor seal P/N 16194007.

All that for $361.74. Does this sound like a good price?