I went and listened to them at Tweeter and put them head-to-head against the JL's. The MB's sounded sweet, about the brightness I tend to like that sound anyway. Plus we can always throttle it back, can't really take a warm speaker and brighten it that I'm aware of.... Member Clumsy1 said he bought the XL spacers for East Coast Scooby and the JL XR650CSi's fit fine, the rears he did not use any spacers. You're probably OK, but if I get anymore information I'll pass it on. The Tweeter had a good setup and the MB's just sounded a lil' better, high's more pronounced. Mid's were so close, slightly different but not enough that we would notice installed by themselves in the car. But speakers are such a personal choice thats why I strayed from highly recommended speakers(Focal and CDT) that I could not listen to first. I'm sure they are great speakers, but if I can't listen to them - can't justify the coin. I plan on taking a lot of pics during the install. Hollar if I can help in any way!