so out of pure interst what turbo would you mike And tabetha recomend for a an engine spec like this

bd16 inlet and exsaust cams
veriour pullys,
cosworth lo comp pistons (7.2:1)
Arrow rods
Ballance Bottom end
Port and polish
Swidish inlet
running on omex 600 ecu

aiming for around 550bhp but if its under o well

it would be intersting to see the garrett and kkk veriounts so a little compreson could be done