Which external electric pump?

Did you run a return with that pump? if not, thats why you killed it. fuel gets hot and cavitates in those rotor pumps without a return.

that being said, as long as you have/run a return. the holley units are decent. i personally run an aeromotive with the build in return, which i love, but thats a big money pump for just a street car.

I'd go with another blue, or someone else will probably post a carter # for less $...which i hear are decent also.

here is your blue with a new regulator
http://paceperformance.com/i-6108799-holley-performance-electric-fuel-pump-12-802-1.html