It's too long, so I shortened it, and also narrowed it a bit.
Added a pad to make it sit level on the two package shelf spikes on the chassis.
The builder will need to scribe a notch in the middle of the coupe seat back to make it look more like a split fold hatch seat. The hatch seat back is narrower, but changing that would require changing the whole rear seat area; adding expense and probably not worth it for something so hard to see in a built model.
-MJS