I'm going with the HRC stage 1 for now. I want to learn what I am doing before I start pushing more power through it, and I can't afford the stage 2 yet. All I really want for now is a little extra pickup that will surprise honduh and 4g63 drivers, and 5 psi works for that. I am probably going to get it installed at a shop near me..(I know the owner really well and he will back his installation with free repairs or fixes for any reason. He will also get me a discount with the HRC kit if he orders more than one at a time, and he already has 2 other buyers lined up. But he has to do the installation at the shop for that deal to work.) I am getting an A/F, boost, and EGT guage with the kit, along with the triple a pillar pod. (I am staying very much on the safe side).
Hopefully you will get that boost around 8psi and give that GSR a lesson in racing.
Lets see some pics! Its always good knowing that there is one more Boosting 420a out there.