Outer Limits 4x4 Board

hey guys thinking about choping my 2 door into a bob tail either a ute or keep the wagon bit. What are the legalities of doing it?
do u need an engeners report or do u get away with out it Because its full chassis?
thanks
Dustin

call vicroads and then an engineer.

I can spin a heap of bullshit on how legal it is for you to go and destroy your car to be told it's not legal when you go to register it.