I haven't used them,but one thing to check is the line below the headlight bezel. It's tough to copy and needs to be right.
Most,if not all of the fillers you get nowadays will have to be tweaked a bit to fit a particular car.
I bought a set of fiberglass ones recently from a vendor here. Some bolt holes needed to be elongated a little with a rat-tail file so I could align it properly.
That was quick and easy,and they look great. I'm not sure what brand full throttle carries.