i recently discoverd my upper ball joints on both sides are shot.I noticed the oem joints are welded into place .Do they make an aftermarket bjoint that will replace these or do i have to replace the A-arm?
is it possible to just knock out the old ones and weld in the 2003 model ball joint or any other brand bjoint for that matter ?

 

Found this out on my lower ball joints on my t-wolf, the uppers are replaceable on mine