you should check out the HUBB, lots of information over there. i´ve just looked around and found a thread about a trip like yours. they say it may be difficult to get into the country with the bike. the border between morocco and alger seems to be open only for moroccan and algerian citizens. but having someone "inside" may help.
here´s a link to the thread: http://www.horizonsunlimited.com/hub...h-africa-67028
92' Suzuki DR 800, 00' Buell M2, 89´Honda NX500
07' Husky TE 450, 95´ Ducati 916