Wilkinson swears by his current suspension bushings. I have put them in four Panteras and really like them. They are Teflon lined and completely pivot unlike factory bushings.
https://www.ebay.com/itm/295591665370
Here is the description:
These bushing are an improvement over stock/original style a-arm bushings that came with Panteras. The inner metal sleeve is teflon coated on its outside diameter and allows the bushing to genuinely pivot a complete 360 degrees. Think of it as being permanently greased. The original style bushings only pivot as far as the bonded rubber can flex and tend to inhibit a-arm travel.