Been there- PM me with any questions-
Front Accessory drive- change to car style- Pace performace sells GM units
Oil Pan- Autokraft- look to the left- Kurt is a sponsor here
PCM - I used Wait4meperformance
headers- Stainless works makes a nice header
there are lots of harness companies out there - I use PSI
C-5 corvette regulator with a tank from Ricks, DSE or MuscleRodz
car intake like an LS2 or LS6
These are a few things to think about- good luck
oh spend money on a good radiator.
A good cam swap and a computer reflash makes for a VERY FUN LQ9

- Chris