S13 Coupe VS Hatch Rear

How close are the rear valance parts on a coupe vs a hatch? Im building a coupe and have a parts hatch…and I want to use the rear valance on the coupe (from the hatch) but I wanted to see if anyone else out there has tried it…

It won’t fit without extensive modifications.

if you have the valance already, why not put it up against the back of the coupe to see how close it is for yourself rather than going on heresay?

if you stretch the shit out of it, it still wont fit, i tryed, and if its fiberglass, throw it out befor you break it trying

how about a rear under diffuser?
its made for the hatch and the company says they haven’t test fitted it on a coupe.
could i have the same problem?