What would you use to cut up half of a truck utility bed into its
component panels? It was a freebie from Craigslist a decade ago. My
knee was acting up a the time so I never got back to pick up the front
half. (Nope, no idea why the idiot would have cut it in half in the
first place.) I think it runs from 12ga to 9ga diamond plate.

Anyway, I'll save the doors and hinges as units, but need to cut the
steel panels near the welds. I'm thinking to use a cutoff wheel to
get to the corners, making slots wide enough for a recip blade to do
the actual panel cutting. I think that both HFT and Ace bimetal
blades are available (broke the last 6" 24tpi Lenox last year) so I'll
do a longevity test on each of 'em, starting with the HFT.

I would use a cutting torch or a plasma cutter. It's quiet, fast and
doesn't beat you up with the vibration.