Red trim was only on the side trim, above the rubbing strip. Not on the wheel arches, they were plain black.
Small bumper could have had the gti spoiler removed and a delux deep one put on. Either way, a spoiler was factory fit on them.
Interesting. I happened to be in a dealer today, and asked the parts man about mk2 spoilers. At first, he couldn't see any on the bumper screen, and told me that there was no such thing, then he looked on another screen and there they were, two different types of front spoiler.
The first type said "GTI, 16V" next to it. Because of the comma, it wasn't clear whether it was meant for GTi /and/ GTi 16v, or just the latter. The second type said nothing next to it, so presumably it was for all other models, whatever other means in this case.

Does anyone know if the 8v and 16v had different front spoilers?