Check out this CAR-ACT 2021 IS F SPORT Bumper Conversion for the 2006-2012 LEXUS IS by CAR-ACT.

The quality of the job comes down to 3 things: The bumper, the paint job and the install job. All aftermarket bumpers have some slight issues with fitment, that's what you get, but a decent bumper should be good enough. Then the painters do a stunning job of paint matching it to the body, because paint fades over time by the sun depending on the care and protection it has, so you have to specifically match the paint to that specific car. Lastly, the fitted it very well and made the little adjustments that give this an amazing fitment overall.