You could try www.convertibletopguys.com . I purchased a top for the dart from them a couple of years back. IIRC it was made by KEE auto tops,who at that time were legendarys supplier,D.

2015 Chrysler200s,2008 Charger R/T R&T,1999 Dakota R/T,1999 Viper ACR,1968 Charger R/T.