Usually if a chassis rail is bent, its an instant write-off regardless of the condition of the rest of the car.
You will want to check if this is the case in your state before you go spending potentially lots of money at an engineer to try and cert something that might never see the road regardless of what he says.
If this is the case, then more than likely it will have to be registered as a write off and be scrapped. (im assuming it hasnt been yet and is still in registration?) otherwise if not, then it wont be allowed to be registered after you report it (again check the local laws and requirements they might be different than the rest of the country)
In regards to the safety/strength - its one of those arguments that can go either way and debated about for hours, but at the end of the day, most states dont want nothing to do with it on the roads so i guess that's all that's needed to close the case.
Just be prepared to hand over our kidneys and first born for the engineer cert. Some charge your soul, knowing that they can get away with it because lets face it - its not something you can just go down to that competitor down the street and ask for a better price. Proper certified engineers (at least in QLD) arent that common (that im aware of

I hope this is all incorrect and you can have a wonderful FTO to hit the road with! Just trying to let you know what the potential go is before you find out at the last minute from the wrong people
