Hi Vinnie can you help me with installation of Quaife diff in my Opel GT 2.0 Turbo, I´m from Spain and it is the first time I am going to install a diff in my car, I need you tell me all parts that I need for plug and play install, I saw in few post I need different sizes of shims, can you tell me all parts that I need for this, with reference numbers, because in Spain there is not stock of parts and I have to order in Usa, thanks.