What do you think? GOLF Cabrio GTI

My concernings are about the "GTI": is it original or not?
How can I be sure about that? The announcement says: 1983 and 1.8liters...

May be looking at the horse power reported on the veicle registration book?
How many horse power should have this version of GTI?

The front bezel is not from a GTI, right?
Double beam is ok for that my?

I think I'll go to see it during the next week end...

Thanks for helping!
Max