RomRaider

Hi, i want to replace my 328i cluster gauge face from 260 km/h to 280 km/h and 7k rpm to 8k rpm same like M3's. After that i know speed and rpm doesn't show correct. The arrangement and spacing of the numbers are different. Because of this cluster needs correction. Some guys say you can flash m3's eeprom to the your cluster but i dont know how to find m3 flash file and how to reprogram it. I cant find any information on google about this. How can i calibrate or program cluster to show correct ? Does someone did it or can help ?