OK, one 2001 TT bumper installed on my 03 Targa and it looks great - thanks to the posts of others that have completed the similar project. Although the bumper fits and looks great, there is a big gap underneath between the bumper and the underbody lining. I have not been able to locate any specific information here or on any of the other forums that explains how to fill the gap - any advice would be much appreciated!

Thanks!