I found a guy on Marketplace that was selling it at 33 a sheet. It's not ceiling thickness, it's wall thickness which is what I wanted. It's thicker than normal ceiling metal.
Thanks everyone! I am stoked. Neil and I will be ready for a break when it's done, but will probably be short lived as we've been Jonesing to get the racks up and get to work. I'll have a grand opening, dyno day, cruise in, etc here soon. It won't be completely finished for a while, probably over winter, but it'll be done enough to get to work. I'm ready to race and focus on other things.