Holley retro drop in fuel pump

I had Tanks inc in Iowa I believe, they built my 66 Barracuda tank with the Bosch pump for my FI Tech injection. I used a 3/8” fuel line for the primary and a 5/16 stock line return; both from inline tube
Intank pumps are great BUT they take up a lot of fuel room. Plus the baffles . I bet I am down to 7gallons of fuel.