I ordered 6 9g servos from ebay, and instead I received large futaba S3003 servos..
I'm not really upset that I got these servos, because they are worth more, but I've been waiting for the micro servos for a while now and these won't work on Project MegaTank with out some modifications :(
I ended up converting two into continuous servos and one accidentally broke so I turned it into a small gearbox.