I've run this pump at the rear, and a Carter mechanical up front for years in our race car and in my street car (10.80/11.07). I have a cowl-mounted gauge as well. My pressure fluctuates at low rpm, but is steady at 7PSI at 6800 RPM through the traps. I drive the same setup on the street and never had a failure. Probably been 20 years and 5000 miles. I do not typically drive it long distances. Maybe 50 miles at a time. I run a toggle switch under the dash and shut it off at lights and when cruising through town. Then it runs on the mechanical pump alone. I wouldn't sweat it.