I think you guys are forgetting the car will weigh about 800KG and it is for drift not a dyno mule.
I will only need about 200KW. well I don't even need that but I want it haha. any power after that is a bonus.
SR20 is what it's going to be! I've never seen a complete forged internal rebuild kit for an 3S-GTE. There are thousands of ads for 1JZ, 2JZ, CA18, SR20, RB2# etc.
but yeah. go the SR!