YJ'S are close to being parallel, 1.5" off over the length of the rod. The end on the axle tube is mounted above the tube on a bracket. And YJ's are mounted the same as the picture, the panhard is mounted on the frame above the pumpkin.
The drag link appears to be shorter than CJ's, probley just the picture.
There also appears to be a small spring lift on the Jeep, going from the distance between the bump stop and axle tube. Also the angle of the drag link compared to the tie rod.
1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1980 CJ5 trail Jeep.
1989 YJ the CJ to YJ.