That 1/4 is what killed it. The trunk floor and the framework behind the 1/4 are all tweaked to some degree. That crease says it all. You MIGHT get lucky with a computerized frame straightener, but the operator better know EXACTLY what he or she is doing. The radiator support isnt all that big a deal as it can be straightened fairly easily. Or replaced. Same with the framerails. They can be pulled back into spec. Since the fenders dont line up as they used to, the framerails have no doubt shifted. No matter how you look at it, youre looking at a frame straightener. How much thats going to cost i have no clue.
Its fixable, but its probably cheaper to find a replacement. Unless you know someone willing to cut you a deal on the repairs, id find a roller to swap it all over. You can always take pics and show them around to see what it could cost you, and decide if its worth fixing or replacing, but like said, a replacement is probably cheaper. If its removeable, save it.