I have the original GTA IV game with all the DLC's downloaded, but i have a modded eflc iso. Will this work or do i have to have the eflc disc? I'm hotswapping.
you can do it with a modded GTA IV ISO and the DLC. That's what I do. I have a GTA IV modded ISO, I go into GTA IV, then load my TBoGT gamesave and play with my GTA IV mods on TBoGT, but you can't do it if you have an EFLC ISO.