Hello ... Don't know if this is the right forum .... I am getting ready to install my GSR into my civic, this weekend. I will be turbocharging it next year also I am planing on using about 12 PSI. I have been debting if I should change the internals now or next year. I am planing on using JE 9:1 pistons and Eagle H rods. I was thinking of change the cams to turbo one. Either crower stage 2 or skunk2 stage 2, not sure which ones would be best with the level of PSI I will be using. For springs and retainers I dont know which ones to get, any suggestions? What else should I change? Thanks for the advise.