You may want to go here and check their prices before purchasing a kit from Crutchfield. I have the same basic setup, but went with the Soundgate adapter, as it is much less buggy than the Blitzsafe. I have an '05 X5 w/NAV & DSP, but did not require the "dsp" adapter, as my MY uses only the 6-pin and 3-pin connectors. They have a chart available on this web site that will help you determine exactly which adapter you need based upon your model and year.

Currently, I am testing the Intravee II adapter, which puts all sorts of information on the display, such as the ID3 info, plus track elapsed time, disc and folder info. But, it is not yet commercially available. One new development with the device is that, with its current firmware version, you can use an Alpine adapter and actually hook up either an Ipod or a changer. You can check it out here.

As for the hardware, the brackets from your existing changer should fit the Alpine unit just fine. If not, you can purchase the two small brackets you will need at a dealer for about $12.95.

Good luck.