UniBody vehicles can be re-paired just like a frame car can .
I see my body men do it every day It may require cutting off the damaged rails and stuff and welding new rails , Core support and any thing else that can not be repaired to OEM specs !

But it requires a frame rack to pull everything out as close to specs before the cutting process is started

I would take some pictures of the damage ( if it is'nt drivable ) to a body shop and see if you could get a guesstimate to see if its in your budget to fix it or use that money to get another project .