the only problem we have ever had with the OLD HOLLEY , edelbrock, etc. is the dome of the pump at the rocker tower junction cracks at sustained high R's. This is prolly the only pump to address the issue. Note how the mounting bolts extend out to the end of the rocker tower to stiffen up the casting.
http://www.candsspecialties.com/stor...htmlHmmm...not to mention just a lot easier to install with the longer bolts. Only thing is, longer bolts mean more flex, which may not be an issue here, but there's always a trade off. I like the design.
The Edelbrock, IMO, has always been the mechanical go-to.