It looks the same as the day I put it on, except that the visible areas are now painted black. Everything is very secure. It aint coming off. I used 2 sheets of coroplast at $20/sheet. Evidently XFI can get it for under $10/sheet. The fasteners came from my junk drawer, so they were free.
To attach in the middle of the car I just drilled holes into the floorboard and used self taapping screws.