Frame rivets - easy ways to remove

[68GMCCustom]

I will have a few frame rivets to remove on my frame and thought I'd ask the brain trust some of the easier ways to accomplish this...based on the available tools. I have 2 to remove on this temporary frame, but will have a bunch to remove when I start on the original frame and build in the coming weeks.

I own a sawzall, a dremel w/cut off wheels, a couple of drills and various bits, plus the related misc. hand tools (hammers, chisels, punches, etc). Can I get the rivets cut loose and out of the frame and hardware with what I have w/o too much trouble? Or do I need to buy a torch to heat them up, an air chisel to cut them off and knock them out with...or maybe a plasma cutter to just blast through everything?