Disassembling seized suspension parts.

[tbd]

Howdy all, thought I'd ask for someone else's two cents on what they'd do in this situation. This isn't urgent, just something I'm dreading & need to plan for in the future.

During a rear drum to disc conversion in the past I found that the bolt which holds the rear control arms to bottom of the rear knuckle to be seized on one corner. (bolt end) I was still able to remove the knuckle & do the conversion but I know I'll need to face that bolt sooner or later.

Pounding on it w/ a deadblow hammer only distorted the nut end w/ the threads. WD-40 didn't seem to loosen it in the short span of time I wanted it done in. (eg: wanted it done yesterday) And I could'nt sqeeze a pry bar between the bolt head & the bushing. It seems that the steel insert & the bolt are seized.

So knowing that I'll have to free that end when I install uprated bushings into the control arms, how would you approach removing this?

I've only heard of torch & PB blaster so far. Any special tools that might help? None of my pullers seem to be relevant to this job.

I would have asked in the maintenance forums but I figure swappers over here were more likely to have run into this problem already.

Thanks,