help!!1 tierod differences?

[1972BackInBlackC10]

I need some help is there any difference between 67-70 and 71-72 tierod ends? is there a way I can tell what tierod ends and ball joints are on my truck without having to take everything apart?

previous owner converted the truck over to 5 lug and replaced all the steering parts, theres a cpp lowering kit on it and the spindles look new so im not sure if they are cpp or if that even makes a difference, I cant just take a part off and take it to the parts store to check so if there was a way to measure or tell would be great