Big bumper convs on a Mk2 are not body kits. They are a conversion.
The 90 model was always known as the "big bumper" model. I think it had something to do with the size of the bumper in comparison to the previous version, which were small.
Now, some kraut at VW may of called the big bumpers Gunter, but i'm probably quite sure they called it "Big Bumper" albeit in German.
Clipper was 91 wasnt it?
Tin