What is Considered SI?
What I'm not clear on is if you HAVE to replace something, if you go back in with a factory part, whether this DQ's you or not.
In any case, I'm only planning on doing an LS6 intake and a Powerbond pulley to complete my bolt-ons and get on the SI list.
The list is just a list but as long as you know its stock dont worry about being on a list as others will still say good job either way.

