I was wondering what kit people use the FPWH-025 which plugs into the harness behind the rear passenger tire or the FPWH-015 which plugs right directly into the top of the fuel pump? Wouldn't the kit that plugs directly into the top of the pump be the best? Why would the other way even be an option seems like that is pointless? Does anyone know if I can get to the top of the pump on a 2000 grand prix gt without dropping tank?