In-tank fuel pump help.

[derotoreut]

Going to be doing my first frame-off with LS swap on a '71 swb. I'm having a chassis built by Scott's Hot Rod, who is providing the fuel cell with Walbro in-tank pump. They are also doing all the plumbing (brake lines & fuel lines) on the chassis. They are providing fuel lines with feed and return lines. From what I understand, there are LS configurations with either a return or return-less system. My friend told me to have them install a return-less style pump, so I wouldn't have to mess with return lines. Is this something I should be pushing for? Scott's says they only provide their systems with the Walbro in-tank pump, but if I wanted to send them a pump, they would install it. Since they are plumbing this up, maybe it doesn't matter. I'm probably looking at installing an LS2 or LS3 with 4L60e trans. Any help is appreciated.