The sender probably doesn't so you'll have to replace the sending unit also with one that has the return line.
I don't think it's so much that the motor uses more than a 3/8 line can give as much as it can use more than the fuel pump can provide. The pump being the weak link here. At least that was the case for me.
I went with a Holley Red. Internally regulated. Pressure set for NA cars. And I didn't have to replace the pu/sending unit or add a return line. No more parasitic drag on the cam eccentric. Only thing is it's a little noisy before I start up but at least I know when it's working. All good.
