Cutting wheel? When through one wheel in 3 feet.
Nibbler? Can’t go through bends.
Air Shears? Useless.
$15 Harbor Freight body saw? One blade per side, done in 20 minutes.
That’s it. I need to get a spot weld cutter and remove what’s left on the flanges. Meanwhile, I wait for the new pans to arrive from KGPR. I’ll take pics next time I work on it.