Socket size for upper ball joint remover

I am thinking I need 1 7/8 for my 74 dart is that right? I am looking for one off e-bay but unsure of which one I need looking to get it as cheap as possible as I already blew 30$ on a 1 7/8 wrench which just slips off because of the shape of the upper and I really don't want to take the upper control arm off because then I have to get a re-allignment done on the car. Any info would be appreciated thanks in advance.:cheers:
Canadian Tire has loan-a-tool,thanks for getting back to me EH?