I upgraded my Jehnert Flatline kit to Jehnert Doorboards. All purchased from Don at Unexpected Creations in New Jersey. The Jehnert Flatlines are direct fit for many BMW models (E9x, F3x, X5) and include the drivers and acrylic spacers. The spacers are cracked in the most narrow section (came to me that way) but have been repaired and does not effect form or function in anyway. These are very musical and accurate drivers with approximately 10hrs of play time. There is a lot of information about these drivers in the forum if you are not familiar.
