1976 dart sport dragcar

Looks like they were already on the Car for previous Motor. Curious if these will fit the W2 heads though. Were W2s on the Car previously?
I bought these especially for w2heads for the dart they have been in the car, broke the motor and took it back out. A plastic bag got stuck to the bottom of the header and left a brown spot on it.wind blew it under the car .they fit good I'm the car. Alitte closer to the transmission than I like but they fit