I have a 2006 with the ML Navigation system and I have a blown lower front door speaker. Finding 8 ohm speakers has been a challenge but I did come across some DS18 Pro-X69 Midrange bullet loudspeakers. With the mounting adapter you can buy and the wiring harness am I going to have a problem with the fit on these compared with the original ML ones? Also is it a big deal using these midrange speakers as a replacement for what I guess is a bass speaker? Thanks.