||Ionic Dynamics a lot of fit issues. to make it fit right you need to work a good bit at it, specially if your using the OEM third brake light, that area needs work.
Kuruma Z , is more or less the same. I was expecting a better fit
but was disappointed.
The best fitting are the TWIN Z spoilers in my opinion. Though they are little bit different from OEM.
Have not tried the Powertrix OEM Spoiler.