Lower ball joint problem on new arms

[donthekawguy]

Ok first problem with putting the 65 back together. I ordered a set of tubular control arms from Partsgeek that have 73-80 ball joints installed already. I also ordered a set of CPP 2 inch spindles from CJ Pony parts. I didnt noticed and didnt know that the ball joints are different between the 6-66 and the 73-80. So now I have found that the lower ball joint shaft won't fit into the hole on the spindle. Not sure if its the taper or the shaft size but I guess it doesnt matter. My question is this-is the diameter of where the ball joint fits into the control are the same between the 60-66 and the 73-80? If they are I can just get a set of lower joints and swap them out. If not it'll suck because I'll have to get a new set of spindles and my wife will not be happy about that! lol Heres a pic of the frame to show the progress.