I have a project in planning that will require a lot of chassi mods. Basicly I'm wanting to turn a RWD into a Project a 4WD. The donor vehicle is also independent rear not solid . So the changers basicly are converting to independent rear and running drive shafts in the front. (If only it was that easy) My question is regarding doing chassi mods. I see on the LSTA web site this sort of work needs to be approved before starting. What is involved in getting sign off to start doing the work. I have photos of cars done the same overseas these I intend to use as a basic guide but what else is needed?