I see all kinds of bracket at Jeggs. Some with good ratings, but only rated by one person.
This one looks like it has support in front and back of the pump. I wish they would show a picture of these things installed.
https://www.jegs.com/i/JEGS/555/60706/10002/-1
https://www.jegs.com/i/JEGS/555/60702/10002/-1