I finally took the chance when i found a extra set of front headlights in mint condition for a real bargain price, as a backup.
So i did this Project with my old headlights. It went well if u have the right Tools.
The router from Dremel, is a little big and difficult for grinding as the headlight is not plain. I'm happy With the result, so, as for the extra headlight set i have, i will do the same in the future.
Some tips: cover rest of the headlightglas for accidental machine scratches's, don't rush and the result will be fine.
Thanks to Particelwave and other here for the great tip and DIY.