Readily available UDMA 66 cables with separated wires?

[PROMETHEUS3]

Ok, I'm searching something somewhat exotic: for a MSI 6215 book PC with close to no space for UDMA cabling, I started separating the UDMA wires into about 10 wires bundles to allow bending them much better than the whole flat cable. Now I wonder whether there are readily available UDMA 66 cables that have got individual or at least small wire packages instead of just one flat cable because separating the wires with a cutter or a sharp knive is somewhat cumbersome and risky...