Potugues; rotor has 2 bolts as far as i remember. And all u gotta do is to unscrew them and then put the new one there. Distributor has 2 parts, the one with the leads and the cap. You gotta becareful for the lead which is in the middle of the distributor, it has a spring under it, and if it flops out, its hard to put it back. Its an easy tob to be done, but dont misplace the lead cables. I advice you to take them out one by one.
And yes, 164 2.0 v6 turbo is the same with gtvs' only small differences and 166 v6 too.166 has 6 speed gearbox and has a different ecu. You can make the car more responsive with str button in 166.