2.5 Ported Head

[38racing]

I was thinking about porting a 2.5 dual plug head. I know they're no good w/o a lot of port work. My question is this: If you had extreme port job on a 2.5 dual plug head, bolted it to a 2.3, ran the TFI ignition and only fired the plugs on the intake side and left the exhaust spark plugs unhooked, how do you think it would work or has anyone tried this before?
Thanks for your thoughts and opinions