Repairing Top Frame

[Michael McDevitt <mmcdevit@twdb.state.tx.us>]

I need to repair the top frame of the '74 B that I am restoring.  I need 
to straighten a bent frame member and reshape a distorted hoop member.  
In order to do this, I will need to remove and replace some of the rivets 
that pin the frame together.  I would appreciate any advise on the best 
way to remove and replace the rivets.  Also, will  MAPP gas provide a hot 
enough flame to heat the hoop portion of the frame to allow me to bend it 
back to its original shape?
Any advise appreciated.
Mike McDevitt