Generally
Knot cross in original design with grease nipple. On the middle axle there is a knotted cross at the front and a similar one at the back. For 1 car, 2 junctions are therefore required.
Fits early 1949.
Fleetwood 60 special before chassis number 68091
All other series 61 & 62 before chassis number 62952
Since only 92,554 1949 Cadillacs were produced, most 1949s have this cross
If you are unsure, compare your old knot cross with the picture