Installed successfully. I am using a 1060 6gb using an iMac14,2 smbios. Here is how I installed:
1) I updated to the final 10.13 release from the app store, while I was on the beta.
2) I read here that people were having issues and different things people tried. I read about having SIP enabled, so I changed the 0x67 to a 0x0 in Clover.
3) I downloaded and installed the driver. It gave me that error, but I just clicked continue.
4) restarted, and added the web driver boot flag (nvda_drv=1)
it worked. I didnt have to install any special video kexts (no lilu, no nvidiagraphicsfix), no special terminal commands, and no extra bootflags (no gfxfirmware etc). Just web driver bootflag, enabled sip, and installed.
I dont know if it matters, but I enabled sip and installed driver with no restart in between (meaning sip was still disabled when I installed the driver, and only enabled after the restart),