According to the guy's auction linked fitting instructions:
"THE SPOILER WILL ONLY FIT IN ONE PLACE, WHICH MAY
NOT BE THE EXPECTED POSITION"
So, the bonnet it is then!?
There's also mention of roof spoilers so an estate may get one after all...
Like the guy I spoke to in my local scrappy the other day removing a Xant!a
Activa spoiler to fit to the trailing edge of the roof of his old Transit -
"cos it looks like those new VW vans and it's just a bit of fun..."
Here's hoping he's bolted it on firmly, or maybe he just superglued it...
Andrew