Oh an other thing to know on the cobra park master R0394 flash fit. Cobra instructions tells you to drill 17mm hole if you go with a 17mm hole and you fitting sensors from behind the bumper out the 17mm hole is to big and you will end up with the rubber but on the sensors showing true and personally dosen't look right. So to have a better looking sensor coming true the bumper 14mm would work better, but you will need to carefully with a sharp blade at you own risk take the sea true rubber off carefully. I did a few test holes first with 17mm and 14mm to see witch works best. Will attach photo so hopefully you see what I mean in photo you will see top sensor in a 17mm and below in photo you see 14mm all so the cobra sensors has 2 small dots 1 top & 1 bottom this is an indication how the sensors need to sit in the bumper to work as they should, it should say this in the instructions but I didn't get this at first till I ask around and was notified of these dots, so before you stick any of the sensors on make sure all is how it should be then sick