Hey Ishaq, I just realized something we hadn't talked about.
The 22" measurement I gave you for the side of the IS300 bumper is for the USDM extended bumpers.... the bumpers you have on your IS200s is even shorter! But I like I had said, the measurements are so hard to get, since the lips are all curve, so it might still work (rather keep in mind that "perimeter" measurement I took).
That lip you see on the IS300 is the most common one used, so it shouldn't be hard to get. Of course, that specific car pictured is USDM. I personally don't like that lip (which is why I don't have one lol), it always seemed too tall for me.