'93 Ford 460 - 2 broken exhaust bolts (pic attached)

A good indicator of how difficult it will be to unscrew the broken piece with an easy-out is how hard it was to unscrew the other bolts that did not break off. Once you broke the bolts loose from their "set torque" did they unscrew the rest of the way easily or were they hard to turn all or most of the way like they were rusted or corroded? The answer to this will tell you if a 3/16 or 1/4 inch easy-out will be able to unscrew them.