Random question - My GTi (90 spec 8v) has the aeriel in the front wing, was it a 16v thing to be roof mounted?
Was a 16v thing yes, my 1990 16v had the roof mount, my 92 8v doesnt yet my friends 91 8v does although we dont think it is genuine fitment
If the 1991 8v is the run out model which I think ran from October 1991 (mine being an August with the wing ariel) it would have the rainbow interior, tinted lenses and BBS alloys as well as the roof mounted ariel, if it doesn't have these it is probably not an original fitment.