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if u have an ls1 like in your info
then get a vy or vz fuel pump assembly and fit this to tank during design
that way u have pump and pressure reg all in one
have u bought yr fuel gauge yet cause u might be able to get one to suit
the fuel pumnp assembly that u get
just beware early vy vx and vt have 80 to 240 ohms
and late vy vz have 240 to 80 ohms
they reversed the ohms for some reason i dont know y
but one of those should match an aftermarket fuel gauge then u dont have
to add another sender unit for the fuel gauge