Regarding the chinese weights being the best improovement(I thought it would be too), I sincerely hope you are up to date with your ASB's and adhearing to the 100kt TAS VNE and 3 hr inspections.
Regarding the T2 I have read the brochures and spoke to people who flew her. Apparently 70perc of the frame is new and yes she has the 355 950 shp MGB where the B3's have the 750 on I believe so a longer torque caution range apparently.