which motor mount insulators, 64 dart 273 V8

the thick "brick" ones with the 2 metal "lips" opposite of each other OR a thinner set/no lips that I see on Ebay listed for 64-66 A body 273? Thank you for your time. RR EDIT I reread the thinner ones descrip & it says for 64-69, not 64-66 if that makes a difference.