Its ksp 4gb ram limit, I suppose it would be possible with the linux 64 bit version and i would be happy to give the cfg file to someone who has it. Also while the game will load the part the 2.4 limit still exists, it wont calculate physics for it beyond 2.4 and if you move your kerbal away from the command pod? it will unload at 2.4 km Yet at the same time you can still make it stand up on the launch pad so these parts are kinda like the twilight zone in ksp.