All I can say as a part time driver of an 83Y ragtop GLi (1.6i GTi engine-5spd) is go for it, just bear in mind the age of the car when you buy it and be willing spend a little money on older cars.
Although a lot of people prefer the clipper kit (you'll see quite a few about) look out for crash damage it may be hiding, check the usual spots for that, panel alignment, bumper supports etc. Other than that the clipper kits are cool. Original Karmann no body kits is my preference, single headlights etc.