That would be correct. The vert didn't come with a factory spoiler in the states (not sure about overseas on that one), and the aftermarket ones for coupes & 2+2s don't fit, for reasons you stated. I believe Kaminari did make a decklid spoiler fro the vert, but good luck finding it. IIRC, it was a low production number thing.
Powertrix also made a good, small, CF lip spoiler that fits all three iterations, as it doesn't intrude onto the decklid very far. Might be easier to find, or you could probably email Charles over there and see if he has any old stock.
Another option that could be easily modified to fit would be the stillen type III wing, if you want something big.
https://conceptzperformance.com/Cart/de ... php?II=348
Oh, and where are my manners?
