Search for some threads using key words "gutter guard." It's what you buy at home depot and put over a gutter to keep leaves out. Some people have modified their stock grille frame with it to look kinda like the dubstop one. Also, check C30world for the same, I saw a thread on there recently about it.
I got the Evolve grille. It took me about 20-30 mins to get it out. The only issue I had was cutting out the actual plastic on the volvo grille. I wish Evolve made the complete grille which you can get straight outta the box and snap it in with no extra work instead of the customer modifying and destroying the stock grille. Its not worth the price and labor either http://********************/smile/emthdown.gif If you can customize it yourself, go for it unless you have $175 to waste. You can also use regular plastic spray paint for it too.