1990 Mustang lx convertible, bent core support advice

Well my lx is in rough shape but I plan to restore piece by piece. It looks like it was in an accident it has a new drivers side ball joint and the dust shield is bent up. It looks like they may have hooked a tow hook to the core support and bent it out and down about an inch each direction and the x brace that connects to the core support on the drivers side is gone (its a four piece brace maybe its called a g force brace.) Anyway the car handles fine no pulling or anything. It looks like they put a different bumper cover on and header panel everything else is fine radiator, trans cooler. So how serious is this? How do I tell if the frame is bent? Doors line up fine close fine. the passenger side fender moulding does not line up with the door moulding but the body lines match up it just looks like it was put on wrong. Money is tight so taking it to a shop is out of the question right now.Other than all this it is a decent vert un molested and the drive-train is solid So any thoughts or suggestions would be greatly appreciated!!​