Driveshaft measurements

So thats center of yoke to center of Yoke..... the 47.81 and the 52.27 measurements on a 69 dart?

Thanks. Thats what i thought, just making sure. I have ladder bars so need to verify my measurements are the same as yours to make sure rearend is in the stock location. If it is then i can assume the 904 would be the same too once installed