ESS G2, 125 MM Pulley, 47 # injectors, BAP,Kinetik crank stud, Wengard Tune. G3 isn't necessary on the 125. Maybe upgrade to G3 IC but not necessary.To be safe, I would say ESS G3 125mm pulley with Wengerd Tuning.
that's fine, the problem is this guy is talking about "safe" and converting a NA engine to taking boost which inherently introduces risk, regardless of how you approach it, isn't safe.Not everyone needs 1500rwhp right off the bat. For alot of people, going to 650rwhp from 400 is a huge jump.
Also some people like to start out low and give themselves the headroom for later to turn up the boost.