I'm doing a 70 also, the paddock has repos
http://www.paddockparts.com/Paddock/search_results.asp?Gift=false&find%5Fspec=dart%20taillight&searchtype=AND&mscssid=A0024B9599664665B2D03D3078AB8D1B&position=12
also year one
http://www.yearone.com/serverfiles/fbshopmain2.asp?cat=A