Moog...worth the hassle/$$

I use Ebay and get old stock Moog and TRW, mostly. Moog lower ball joints are pretty scarce, and when they do show up they're pricey. I've got TRWs for $40 a pair, though, and they show up regularly. Most any Pittman arm will be hard to find, but they show up now and again. Lots of tie rod ends. If you can plan ahead, you can get good old stock parts for good prices.
XRF is good stuff, but they seem to be sticking with late model mostly. They did a run of the '60s parts, but those are drying up already, without more in sight. Those I've found lately are expensive. XRF uses Moog part numbers.