[lolife99]

Here's the part of the problem.
If there were three center links laying on the ground.
One 63-70, one 71-72, and one 73-87,.... Would you know which one to buy just by looking at them?
I know there is a difference, but I couldn't pick out the correct one.
Not without a known correct inner tie Rod to fit up to the centerlink.

Take this as a lesson learned about being informed on what you are buying.
These old trucks have been around a long time and parts get changed.

Better yet, become a Subscribing member and post the wrong part up for sale, in a thread of your own..
People are always looking for good centerlinks since they aren't reproduced.
Someone that is converting to disc brakes and using 71-72 spindles might need your part.

Good luck with you project.