It's a gamble these days. Moog, TRW, McQuay Norris no longer offer the center link.
When I rebuilt my red 66 back around 2009, Southwest Speed was one of the only suppliers of the centerlink. They cater to the race crowd, figured it should hold up. I bought one and was pleased with the overall quality.
https://www.southwestspeed.com/?sec=view_part&id=925Lately there are many more options avail on eBay from relatively unknown manufacturers, and prices have dropped significantly.
Holley offers a 'Proforged' line of parts. Their page does hype the quality of them, but I can't say if they are better/worse than other offerings. At least it's a known name and price is comparable.
https://www.holley.com/products/suspension_and_chassis/steering_components/parts/106-10060It's avail from suppliers such as Summit, Jegs, Amazon, etc.
For ball joints and what not, I still buy Moog. Rockauto is a good place to start.