Broken exhaust shroud things

When I purchased my 8, I noticed the plastic inserts around the exhaust were broken. most of the clips that secure them to the bumper were broken. I'm unsure how to reattach these to the bumper without it looking terrible. So far the best idea I've had is gorilla glue, but I'm really looking for a more mechanical solution that won't end up failing after many heat cycles. Any ideas?



Thanks!