Not sure on the badges. Probably any Chevelle Resto parts house would have them as well as the decals, but if not the decals are available through Graphic Express for $189.00 a set. Go here
www.graphic-express.com/gm_chevelle.htm
Phenix Graphics also has them for the same cost. Their at
www.musclecardecals.net/gm/1969ycvl.htm