[LT4 650]

So I am starting to decide on what I want to do for what I am calling my "Stage 1" Build. I already have a Roto-Fab CAI and I have read through many threads and I have done some research from a couple of (according to Camaro 6 and others) reputable builders.

Below are examples of what two different top builders are calling stage 1. I know I could do other things for my Stage 1 decision but I am focusing on one of these first and then headers for stage 2:

1) Stage 1 - CAI, Upper pulley (2.3), Ported throttle body, Gates HD green belt, Catch Can & Tune

2) Stage 1 - CAI, ATI balancer, Lower pulley, GM Crankshaft bolt, Gates HD green belt, Catch can & Tune

Thoughts on if either is better and why according to your experience. Thanks