My upper ball joint is done (92runner) and am wondering if i should go with new a greasable ball joint as opposed to the original sealed one. Any comments or suggestions?

 

The stock ball joints are not sealed, they just have a bolt in place of the grease zert. All you have to do is remove the bolt and screw in a grease zert. 6 mm is the correct size, you can get them at Pepboys for about 50 cents.

 

I think all BJ's are greasable, or I would think they should be. I replaced mine about a month ago. Went with Carquest units (made by "Moog") and was very pleased with the constuction quality. It drove a little bit nicer when I was done. They were $60 a piece and come with grease nipples.