my LS, which parts stay stock for boost??

[watdaflo?]

you're not seriously comparing the complex internal components of a motor to tires, are you?

nope, im comparing your logic of replacing perfect working parts for new parts.

[Motivation]

nope, im comparing your logic of replacing perfect working parts for new parts.

because they are perfectly good working parts for the set-up the motor has now... Not a boosted set-up. If you are going to do it, then why would you want to boost it, blow it up, then rebuild? It will blow up when you don't have the money or you really need the car. Do it all at once, so you know it will be reliable and you won't be having to worry about fixing things that could break while you are on your way somewhere, and could leave you stranded...