They are different and will NOT work.
Also, stay away from those guys! They will not back there product if there is issues. If you search it up top, you will find threads about it. I delt with them some time back with an exteder/tire carrier. $hit broke, they sent me a pice to so called fix it. then told me to go to the hardware to fix it then wouldnt answer the phone or return messages. Happened to others as well not just me! Bad business