The "lever strapping" is not a new idea. Many older pumps utilised this idea.
What was the part number of your replacement pump?
When fitting a new pump, it's often a good move to fully depress the hand lever while marrying it up to the engine block. It takes the spring pressure off the body while bolting it up. Some pumps have quite an amount of travel, so it's often a good move. let us know the part number of your replacement, Evan.