While it may hit bus speeds that doesn't mean the overall data or payload transfer will increase by double. I've seen folk expend a lot to push up the bus speed and find out it didn't pay off as well as they hoped.
If you want to pursue this, call OWC (see google) and see if they have a kit for this.
Bob
My macbook pro is equipped with 3.0Gb/s SATA bus for
the optical drive and the standard 5400 rpm HDD. If I was to replace both of
these drives with solid state drives capable of at least SATA 3Gb/s speeds
(roughly 300 mb/s data transfer), could I somehow run RAID software so the
computer knows to pull parts of identical data off of 2 SSD's (capable of at
least 300mb/s to max out the SATA 3GB/s bus) to achieve a theoretical 6gb/s
limit (via 2 lanes of sata 3.0 speed)? Would this be nearly as fast as newer SATA systems capable of 6GB/s bus speeds?

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