'67 charger Nascar

I'm toying with idea of making the Revell '67 Dodge charger into a Nascar racer. What are the major changes to be made and items to be added? Difficulty? Thanks in advance.

Source: http://cs.scaleautomag.com/scacs/forums/thread/419024.aspx

Andrea de Adamich Philippe Adams Walt Ader Kurt Adolff Fred Agabashian