MK1 TD, I believe, were never produced by VW, well I have heard of some Rabbit TD's (?). The "GTD" was a diesel with a GTI finish. The engine is a CY (mechanical head), K24 turbo with no intercooler, 70cv, gearbox the famous FF. Interiorwise it had the 4 branch steering wheel with the center piece written Turbo diesel, a 4+E golf ball (E in orange), classic "upper" finish (thicker carpet, door pockets with speaker, glovebox dashboard). Then there was 2 colors for the seats, standard seats but with either black or red striped center on grey (black spected) velour cloth.
Came in 3 doors or 5 doors; GTI stripes on the sides and GTI airflow plastic "things" on the side of the windscreen, large (just black) side strips, big Duckbill and GTI wing arches otherwise just like an ordinary mk1 golf (even the ordinary front brakes)
9 spoke aloys, 4 light grill and the Kamei spoiler were options. I don't know about the green tinted windows, option or standard, I've seen both
They are kind of getting rare, as some of the parts are quite saught after (steering wheel, badges and especialy the exhaust down pipe)
I wondered about the waterlevel sensor and asked an old VW mechanic who had a GTD and he told me that they were not connected but that the wire (and plug was there). Took a look and found the wires well put away near the bottom of the battery tray.