Original - with antenna!

Need an original windshield - complete with antenna wiring - for a 1983 Alfa Romeo Spider - my exterior rebuild is almost complete! Any sources/info/advice would be greatly appreciated.

Well all, I have put it off long enough, the windshield replacement has started. My son and I had it off and stripped of it's trim and dry-rotted rubber in only one hour. I have decided to have the posts re-chromed and I am getting quotes now. Are the four screw heads that hold the lower trim...