At the moment the car has a GT3071 fitted on the std 2wd manifold and its nice and drivable, I was going to adapt an ex gate 7064 with the larger ex housing onto the stock manifold and see how they compare. I had been told by the dealer that they're similar sized turbos but I haven't checked anything yet, my main reasons for wanting to try one is because they are now quite cheap to buy (comparable to the GT series) and readily available from UK suppliers.