Considering Holley sniper EFI for my 1969 340. Thoughts from people who have that set up?
I've had an Aeromotive Phantom system in my Duster with port EFI for 9 years and I have never once had any hickups from fuel pump pickup. It's even in the front half of the tank. I wouldn't expect the performance of the Tanks, Inc one to be much different.
Succeeding with an EFI fuel system is using an in-tank pump, having a return line, and mounting the regulator after the fuel rails.
You can do a surge tank, but pretty much nobody actually needs one. It's also a lot more connections, 2 fuel pumps, etc. The fuel will get heated more under the hood as well.
I'd tell everyone to run a multiport setup with the ECU mounted in the car for max gain and reliablity but its not in everyone's wheelhouse.