I'm 6'2" and have a '77 with the factory sunroof. I installed PRP roadster seats, and have just a couple of inches above my head...No sliders, just bolted to the floor...

Hi Joel
I drive a 1984 GTI in British Columbia Canada.
I am interested to have more details on your seat choice and source.
My GTI has 3,000 km on it with original brown leather seats.
I am 70 6’1 220lbs and find entry a little tight but comfortable one in the seat and stretched out.
Mike