ok here are more progress pics;
now that my engine was out i decided to start by stipping it out and getting the injector units out; firstly i took the turbo and inlet manifold off and anything else that got in way of removing the head, then got the head off;
its not too difficult to remove the injectors, basically they are split up in two, first 2 injectors on the left and the 3rd and 4th are on the right hand side, to remove them you need to unscrew the spline bolt from the rocker and then a hex bolt from the top of the injector itself. once this has been done you need to remove the wedge on the left hand side of the injector. below you can see the rocker with the screws un-done
once the lobe is free you can rest it on the cam or behind it and then move onto the injectors;
next you need to remove the injector wiring which took me ages because some stupid clips which are REALLY hard to remove, looks like this;
to remove the injector you need to twist it to the left with a pry bar and then using two pry bars apply an upward force on the top of the injector and then also twisting it and it will pop out in a jiffy;
its the same process for the rest of them.