So you have a '67-72 center link then.
That's fine, you don't actually need to get a new center link. Just buy a pitman arm and idler for a '68-72 car. You can buy a '68-72 power steering pitman (which will be small sector) and the '68-72 idler arm and that will work with your center link just fine.
If you bought the '73 up stuff recently you can just return or exchange it