Yes Apple has it pretty much down. Apart from that the spi (the model you have) had painted coloured side rub strips orange if grey, sliver or black exterior colour and blue strips if yellow and red exterior colour. Mpi's had black plastic rub strips with sporting logo on. Spi also has more mechanical bits from the cinquecento, cinquecento ecu, mpi has a much smaller unit (in my case anyway). Exposed suspension strut tops on the mpi, rubber covers on the spi. Inlet manifold on the mpi is obviously for a multi point set up so visually totally different, throttle bodies different. Mpi has a knock sensor which detects octance rating of fuel, spi does not. Also shorter oil filter by a couple of cm's for mpi, spi sei's are basically rebodied late model cinq sportings, mpi's although have similar basics such as the basic engine block have a lot of other differences, especially on the electrical side!