I went with 1/2" stainless tubing from tank to frame rail by pump, -8 hose from tubing to pump then back to the tubing from pump to regulator, 3/8" tubing from regulator to each carb on a 572 hemi. Tim

1941 Taylorcraft
1968 Charger
1994 Wrangler
1998 Wrangler
2008 Kia Rio
2017 Jetta

I didn't do 4 years and 9 months of Graduate School to be called Mister!