bodystyling

Can anyone throw any light on replacing upgrade turbos Ive looked at a few But im now looking at the vf 39. Does anyone know the spec of this turbo and what sort of power can I acheive with this size turbo fitted with my already fitted uprades.

So Far
Aps Front mounted dr500
Aps cold air intace
Aps 3" Turbo to tip de cat exhault(changing to 3.5" APS)
Walbrow upgraded fuel pump
Gems ECU
Looking also to change to twin rail injectors.

Cheers Tony