The FE and GE might not have much of a difference in weight, but i think the 4E-FE would be lighter, moreover, most(if not all) of the suspension manufacturers in Japan state different part numbers for the EE100 and AE101, and sometimes even the 4A-FE engined ones get a different part number itself. I'm not sure about other manufacturers, but for TRD, the damping/rebound is different amongst the different engined cars.