Can I used hacked El Cap bootup from 2,1 mac on 5,1 mac

Hey all, I did a hack on a 2,1 8 core mac to run El Cap, I am replacing it with a used 2010 12 core, can I just pull out the bootup disk from the hacked 2,1 (with El Capitan) and install it as the bootup for the 12 core, AS IS, with all the existing files and hacked El Cap on it? I plan to mirror/duplicate this bootup and test out High Sierra later on the the machine. Any info is appreciated.

Thank you,
G