I've run the holley red as a push thu to a carter mechanical pump for years.

Depending on you quality of fuel you will have evaporation problems. Ethanol is mandatory around here - Everyone told me it was my carb - I switched over to pure gas - ( Stromberg carb so it isn't something easy to just jet up) and all the problems went away.

I have used one of those cheap square Facet pumps just to prime or to help prevent vapor lock on very hot days and it worked fine.

Edelbrock has there own version. I was going to try one of those in the future.