Tons of different choices for Bumpers and Grills. But we need to know what year your STX is to be able to determine what would fit and if you would need to change header panels, etc.
And to be honest, if you have 05 or newer STX, I know a lot of people on here would be very interested in both your Grill and Bumper.
I would be very interested in the Grill and would be willing to trade you straight up for either of my Grills.
My 07 Grill:
My 02 Grill (installed on my 99). Not as easy to see, but its just a black honeycomb grill.