I confimed that the mounting points of the 300 and 500 are identical. So the thing I am concered about is how much the side wings of the Bumper Cover will stick out, but with those mesurments roas provided I'll find out a rough estimate on where the 500 bumper will meet. Are the 500Es front wheel arches the exact same length as the 300es?

Jim for now I'm just trying to get the bumper to work right. The pictures you saw with the 300 converted to the 500 front, was it the fenders and all... What part looked weird on it?

Thanks