What power are you after as that really determines what turbo you need.
20G,18G and 16g.
VF30,34,35 are good upgrade.
TD04H are very good for very quick boost and top end is not too bad either.
Cheapest will be TD04H,STI TMIC,CAI and use your standard injectors.....plus a full decat......power wise....who knows but makes for a real good back road blaster but might not be too hot for Crail.[]