Few months back, i decided to upgrade to the famous Walbro fuel pump. As i know Walbro has many types with part number GSS-XXX and has different capacity output to suit your car. They also have a special "High Pressure" model. So does not mean you have a Walbro, its all 255 lph. Does not mean u have a 255 lph and you are in the high pressure category. Please refer to your GSS markings on the pump itself.
e3000-53395 (84-92 Rx7)
Price : RM480-520 (it may come with boxes and watnot)
Price to install : Ask your mechanic. Some fuel tank must drop down before installation.
Note : It is a bit noisy like a bitch whining inside the car (Im using GSS-342 255lph High Pressure)