A post-delivery audit under this part includes--
(a) A post-delivery Buy America certification as described in Sec. 663.35 of this part;
(b) A post-delivery purchaser's requirements certification as described in Sec. 663.37 of this part; and
(c) When appropriate, a manufacturer's Federal Motor Vehicle Safety Standard self-certification information as described in Sec. 663.41 or Sec. 663.43 of this part.