Does anyone know...
 

the OEM part # for the front right rear ball joint (non-greasable)?

You have to buy the whole control arm. Top or bottom? Gilliam is our resident part # guy these days.

Only the hyrdulic joint can be pressed out. You have to buy whole new arms.
 

I recommend Febi-Bilstein from PureMS.com. High quality parts, low price, and you're supporting a business who keeps this site free.<ul><li><a href="http://www.purems.com">Call them and ask about Febi-Bilstein arms</a></li></ul>

are you positive you have to buy the entire control arm?

598.9999999999 % sure. No doubt in my mind. I just did it couple weeks ago. Front lower right-rear

^^^what he said^^^ I couldn't support that statement more if I tried.

Yes. You have to buy new arms if the ball joint fails. Or spend $$$$ on CPP arms.
 

Solid metal joints and they're fully rebuildable.