The one you linked from Matco is the correct one, in fact, even the late model GM full float light truck axles use the same 6 pin axle nut. Keep in mind that there are 2 nuts per bearing, and the outer nut does need tobe torqued to sped to lock it correctly.
One more thing, if you have an OTC dealer, you may be able to get it for less from them than the tool truck.
