I just picked up a 66 gt blue with a white vynal top, 273 carter 4bbl red engine with black and chrome valve covers its an auto car and has 2.5 inch single exhaust. The car has disc breaks and a square vacuum box that sits on the inner fender. Does anyone know what type of dart this is? I haven't been able to find another 66 dart with the vacuum box. any info would be great thanks.