[wkooiman]

Fuel injection or Webers?

If you are talking Webers, you can buy AN banjo fittings, and the routing isn't very difficult. I currently run a Carter electric with no regulator to a tee, and 2 lines, one for each side.

If you are talking FI, it depends on what you have. I have seen several. They all had fuel rails, but I don't recall how the return line was plumbed.