The early Zenki 'square' center garnish can be 'made' to fit the later model Kouki round taillights if you like that look.
I have the early model garnish cut to fit the later model lights if someone wants to buy it. (Just the center garnish)
The pic shows it fitted to my car.
I can't remember how I mounted it, but it might need a couple of brackets made to fit it.
I ended up replacing it with the stock garnish.