The specs I read don't specify a max size card but do mention that they support FAT16 & FAT32 file systems. FAT16 is limited to 2GB but FAT32 has a 32GB limit so you should be able to access a pretty large card using FAT32.

Crutchfield has it for $149.95 with free shipping. MasterSheet instructions, wiring harness adapter for the Crossfire, antenna adapter, and the DIN radio removal tool are included free as well.

Sounds like a decent deal to me. I think I'm going to order one.

EDIT: Maybe I'm not. Take a look at this warning that popped-up when I was ordering it:

What you need to know:

* The harness does not supply connections for the front speakers, so you will need to run new speaker wires to your front speakers.
* The harness does not supply connections for the rear speakers, so you will need to run new speaker wires to your rear speakers.
* When used in this vehicle, the functions of the yellow and red wires in the Crutchfield harness are reversed. The yellow wire supplies ignition power, and the Red wire supplies constant power.
* You will need to bypass your factory amp by running new speaker wires from the radio to the amp location and splicing the new speaker wires to the factory speaker wires at the output side of the amp.
* Questions? Call 1-888-955-6000 to speak with an expert.