This device allows implementing an ethanol content sensor into a high flow fuel line. The design has dual passages that the fuel can flow through, so there is no loss in fuel flow. Can be used on feed or return fuel lines. 10AN female ports will require adapters to match the hose in the vehicle.
Things that could pair well together with what you are looking at...
Messaged Brian about the thought of doing coilovers and sway bars on my c6. He called me up and we talked for probably 30 min, awesome guy to work with/shop with. Definitely would recommend this company.