AUM are all 150bhp buddy.
Depends what sort of power your looking for?
You have a K03s and tipically stage 2 k03s with every mod thrown at it would see around 240bhp 270lbs+
Or you could go K04 and relentless manifold and alot of supporting mods will get you 300bhp 270lbs+
Or even bigger power would need big turbo but youl need engine internal upgrades as youl be throwing rods out left right and centre lol

Good luck and welcome to the forum