Removing an upper ball joint

Hi,

I have to remove a 31 years old upper control arm ball joint, and lets just say he doesn't want to... :evil:
So, to heat a little the control arm around the ball joint, will work?
Ever try that?
Can this create strength problem in the control arm?

Also I have read somewhere that some persons were making small weld tacks to keep the upper ball joint attach to the control arm, any of you would advice/avoid to do that?

Last question, I am looking for a set of 1972 model sway bar bushing (the triangle one). Can't find it, any of you know a supplier, and if by any chance you know one in Canada would be even better (because of the custom fees)?


Thanks for your help