It's not actually that hard to do, I have minimal mechanic experience and managed it ok.
You have to remove the air intake tubing, if it's got the original clips on it you may need to buy some new jubilee clips to replace em (70mm ones)
Getting everything to hold in place while compressing the piston is fiddly but doable.
If you dont have an eezi bleed then bleeding it after can be a bit of a pain, not sure if it's normal but my clutch pedal was flat to the floor after replacing, had to pull it up, then push it down.
Oh the electrical connections that are on the place thats attached to it come off.. bend em kinda backwards.
-Along your favourite roads an Alfa Romeo GTV will worm its way into your affections, you too will become infected with virus Alfa Romeo and I am afraid there is little chance of a cure...