The troublesome part with every 360 drive is dumping the keys from it, indeed if it was not for the keys then flashing a 360 drive would be trivial and just require a compatible sata port (on that matter the liteon is quite accepting of sata ports so it is worth trying yours, if not via 6421 cards can be found in many places). Still keys do exist so
There are 3 main versions of liteon when it comes to modding them (and not that it is relevant several sub versions of those)
7 series
8v1- these started appearing in June 2009
8v2 and 9 series- we saw these in October 2009 from repair shops (retail will probably be a bit later)
There would be a fourth from the new slim 360 and while work has gone on there are no working methods at this point in time.
On the subject of times if you have a machine built before mid June 2009 and not updated since August the 11th 2009 you can JTAG hack it which is well worth doing (not to mention you can dump your DVD keys with that instead of messing around with probes). If you have updated there is nothing you can do but if you do have the ability then
https://docs.google.com/View?id=dnfmv5h_186pp2zddm (a bit outdated but covers enough to get you up to speed).
7 series can be done with that probe/kit, do note you can build your own
http://forums.xbox-scene.com/index.php?showtopic=668247 and others slice up USB to serial cables (phone cables being a good source) making total cost $10 at most.
8v1 can be done with just a sata hookup to your machine (there was a bug that allowed the keys to be decrypted introduced when they fixed the v7)
8v2 and 9 series need a cut trace/lifted pin method (you can use some wire or you can buy a pcb mod:
http://www.modchipcentral.com/store/xecute...ed-version.html or you will need another probe (as well as that original kit or if you prefer just the base unit to power the drive), from the site you linked
http://www.modchipcentral.com/store/produc...=270&page=1 will sort it. As mentioned though you can do this with a few switches and some solder too if you want.
Cutting the traces (and repairing them) and possibly soldering can be difficult if you are not well versed in it all.
If you are so inclined you can mod any of the liteon drives using this cut trace method.
Several companies do flashing kits and they are all as good as each other really (the devices are very simple after all).
As for modchipcentral- if they work they work but if something goes wrong then do try to resolve your issue with them but one or two people have had serious issues over the course of things so you may well be filling up this forum section with several expletives.