WotC revisited the setting (in a "drive by" fashion) under D20Modern/Future, so it isn't even all that "old" anymore.
Shouldn't be too hard, really. The setting is already Traveller with a little more Star Wars mixed in than usual. The racial descriptors in the MGT core book cover most of what you need for the races of the setting, and the tech progression rules were such a trainwreck that Traveller can only be an improvement.