Hellman fuel sump
 

Building a turbo 94 z, 6.0 lq4 + s478 and I came across the Hellman fuel sump. Seems like a rather simplistic way to run a larger external pump with minimal headache. Has anyone done this? Any results? I saw a few people mention using this along with the in tank pump, how about by itself with a large external?

Thanks for any info