As the arms of my Peugeot was still in good condition and only the joint portion was broken I removed the arm bought here and did a mix of the two ie Peugeot + spring arm articulation and "generic" + hood Peugeot.
The dismantling of the arm parts is fairly easy, you have pliers and some biceps.
The dismantling of the vehicle arm is not an easy task because the motor shaft is tapered and oxidation does not help matters, it takes hard wipers, if you do not have a little help Dremel is the case;)
In short, if you are a DIY enthusiast is a breeze to change.