I run a Haltech platinum 1000. Pushing for 400 to the wheels this time around. Grx2867 turbo, id 1000 injectors etc. Still on stock transmission though but I would say your best bet would be to do a mfactory diff. That will be my plan for the future. Also all 4 motor mounts are upgraded. Par gears just dont seem worth it. I would rather just have some spare transmissions kicking around. Also im running a spec stage 3+ clutch. Stock flywheel.