Hey, Im in the process of building an LS/VTEC Turbo and I just bought a LS block with CP 9.2.1 compression pistons and Eagel rods and I have a GSR head. I herd you are suposed to buy the pistons for the head but this block used to be just a built LS so they are LS pistons. How much of a diffrence will that make compression wise and how will that effect boosting? Thanks.

 

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