It is very easy task to swap actuator. To get any power increase car needs to be Chip Tuned. You will need to use actuator from your old turbo.
Upgrade Turbocharger BMW 520d / 320d E91 E90 / 120d E87 New Stage 1 Turbo
Upgrade Turbocharger Core For Bmw X3 F25 X1 E84 2.0d N47d20 49335-00520 135kw
Upgrade Turbocharger For BMW X3 X1 2.0d N47 520d 320d 120d New Billet Turbo NEW
BMW 320d E46 / X3 2.0d Upgrade Turbocharger New Turbo Stage 1 Billet
Upgrade Turbocharger Cartridge BMW 730d 530d 330xd 330d X3 3.0d Turbo Billet
Turbocharger BMW 530d / BMW X5 3.0d 160kw Upgrade Billet Turbo New
