If you've got an SX then why dont you just replace the standard in-tank pump with something a bit better. The EFI corolla's have a baffled tank, so the only reason you should be getting fuel surge is if the efi pump is on its last legs. the 3sgte and 7mgte intank pumps are a direct replacment for the AE9x EFI intank pump, and then you dont have to worry about garbage like surge tanks, lift pumps and external high pressure pumps.