Can i take the mbr and rom from macbook for my smbios, where i set a smbios for MacPro 7,1

Hey everyone! I cannot launch any apple services (iCloud, iMessage, etc) I’m trying to config my smbios and everywhere talking about rom and mbr. As they told, I need a real rom and mbr from real Mac. Can I take rom and mbr from MacBook, if I’m using smbios for MacPro 7,1?

P.S. sorry for my English