100% agree my current car was pre built and I saved thousands not building myself.
I suppose I could broaden my original question. Whether a road car conversion or an existing race car what modifications would be needed to help the car do endurance racing
Sorry forgot to mention would be building a class b or c car. Surely a 330 could get on the pace for B. 330 challenge regs look quite strict in terms of what you can do especially Regards weight etc