As i have said before i think this car will be 100% sound, where i work i am always driving damaged cars, some severley, i one drove a Impreza Sport estate which had been smashed hard in the side down the industrial estate upto about 70mph and it was fine! the B post had been pushed right in, The floor pan was pushed in and the Rear subframe and diff had moved about 3 to 5 cm, if you think how much the tolerances had been changed on this car and it still drove sound then imagine what a couple of CM if that will do on this Nova 4x4!! Nothing, best of luck with the rest of your project mate, cant wait to see it painted with the running gear in.