Projects Summit/CVR Vacuum Pump

Has anyone had experience using a Summit 760152 / CVR VP555
Vacuum Pump for your Power Brake Booster?
Thanks!, Joe

 

I put one on my74 GMC motorhome as a precaution while I'm towing my race car on the trailer. It cycles often, as it maintains the vacuum. What's your concern?

 

I'm running too much cam to produce enough vacuum for my brake booster. Just wondered about the CVR pump quality.