Control Arms

Anybody know if there is any difference in the control arm bolt and nuts between the 70' and the 73'+? The reason I ask is I'm going to a classic car junkyard that is walk in only to get some parts for the Disc swap and I want the right size tools...I dont want to carry more than necessary. I currently don't have a wrench or socket large enough to remove those bolts and am kinda hoping if I get one that is the same size as the one on my 70' it will be the same as a 73'+