So the final outcome here is that i got both the turbos replaced. VF 31 and 32 with VF 26 and 27.
Whilst i don't know a lot about the mechanical side of vehicles, having had the car for around 10 years now, i know how it drives; it all seems a hell of a lot smoother, gear changes are less jerky and it's running great.
Not sure if you can tell, but i have the old turbos from it, and i'd be happy to take photos of them if anyone was interested in having a nosey?