The dogbone part number is 6061 and no you can't support them. If you don't have tiny slivers of fuel line in the drive cups then your going wear out dog bones like no tomorrow. You need to take ALL the dog bones out and check the drive cups and put a small sliver of fuel line in the drive cup to take up the slack so they don't slap around in the drive cup. Less play=Longer life. Just don't get them to tight, you should be able to move the A-Arm up and down and turn the wheel with no binding.