Thanks for the replies & advice guys.
In hindsight I probably should of junked it when I got it years back. I've a couple other year resin Pontiacs to build and they are of a much better quality than this 'thing', but it did put me off buying resin for a long time.
I was probably kidding myself when I thought I could save it. I'll probably keep the hood to use on another build and junk the rest.