I am in the same boat as that seller, "This setup has less than 5K miles on it and was only run with 93 Octane.
Upgraded my system for E85 and no longer need this setup." I am using E85 in my setup and using an AEM Infinity 6 ECU.
How can I wire these fuel pumps? Can I just splice both power wires and ground wires inside the tank for each fuel pump and just use higher grade wire?