Water Pump for 360 LA

The older 60's style was made of cast iron and had the water outlet on the other side.

70 and later used an aluminum water pump with the outlet opposite side....

Go find a cast iron water pump to match your body, you can take the timing chain cover and water pump off the 273 and use them on the 360. The timing chain cover has the timing marks or the timing mark tab that bolts to the bottom of the water pump...