Thanks you vert much, it has really helped me alot
but i would like to know if those things can be included into the renovation or they are
not allowed or something like that
You can do anything you like to the car , full body kits are available often sold on here or the ebay. respraying will be the main cost but you can get alot of discount from some body shops if you do the prep work your self.
as for windows if your in the uk you can only black out the rear windows and light tint the front.
So you best option is get the car rust free fixing any holes rust etc, take ya time and do it right.
then add a body kit zender or gta version . then depending how long your need to save for the respray start to prep the car by rubbing it down and getting everything smooth and straight . then respray when your able to.
tint windows when ever you like . you can even add lowering springs to go with the body kit.
I would stick to alfa body kits as i mentioned as they do some kits in poland that make the cars look odd.
as for head lights you can get a xenon light kit.
then you can do some stuff to the engine , induction pipes air filter and make it look nice.
but as i said before take your time and you have something to be proud of.