Do you want to totally get rid of the Chrysler emblem, or just cover it
up with the Autobot insignia? I am sure there is somebody on this forum
that can make you a custom decal to place over the emblem.
Much like the custom badges already produced by our members here, you wouldn't be able to tell it was covering the original badge. Of course,
you would be limited to the shape of the current badge but I bet a black oval with the insignia imprinted on it in the correct shape should work.