Ok boys, it took a couple bodyshop hours and they charged me $100 cash to have it fitted. They had to trim off approximately half an inch from the inner corners of the bumper (see red arrows in 2nd photo) to install the bumper properly with the SRT8 grill on the car. Unfortunately the edges on the grill still do not match up with the bumpers'. One solution I can think of is to add spacers between painted part of the grill and the plastic honeycomb base in an attempt to line up the edges. But again, that would leave gaps between the two..hmmm.
Considering $$ and time I spent on it, the option of painted grill with chrome mesh is starting to look pretty good too