I had the same idea as you at one point but it never got far after I noticed the boxes mounted on opposite sides...
Might be time to do some research
Edit:
They only mount different, don't they? Or are the boxes actually mirrored? I will have to check this out tomorrow. I have a Gbody box...
I just disassembled a set that were seized on, took me roughly 2 hours and I was done both arms. I used a cheap air hammer and a bit of swearing. It really wasn't that bad.
I pressed them back in with a 'press' I made with a bottle jack and some scrap tubing. I have a couple pictures if you're...