According to RestoRick's Assembly Sequence, "undercoat wheelwells" is number 49. No undercoating of the whole car is mentioned.

Items 50 - 63 all involve the interior or upper body. Items 64 and up include upper control arms and rear axle/springs. If these items didn't get undercoated, then it looks like undercoating the whole car probably belongs at number 49 also.

http://www.restorick.com/tech/topic.asp?TOPIC_ID=58

My car only got the wheelwells undercoated, along with the bottom of the trunk pan, but I did notice there was undercoating under the front spring hanger. And there was undercoating overspray on the gas tank and on rear seat belt bolts, which are in agreement with the list.