About the windows, I have been looking and looking all over the world and found it on Pasos1 a Bogota enthusiast from Comlombia who have his own youtube channel. They call themselves "Twizeros Bogota."
I contacted him and while I was asking him to help me I also came over the place in Spain.
These windows have some flaws but they are negotiable by doing some twerks on the fastening to the inner body velcro system. I will take some pictures and show you soon.
The quality is very sturdy and they function very nice. I also recomended some improvements to the Spanish dealer and he said they have changed to my recomandations.
I do recomend these windows. And the dealer does fast delivery when he has been paid.