What if I use a threaded rod, locktite a nut on the inside, a washer on the outside then a nut and heat it and turn the outside nut on the washer? Maybe not cherry red but with Mapp gas?LOL, no home propane torch will heat that up cherry red.
I would weld a threaded rod right into the hole then make a small bridge with a hole to the ends
and use heat and a nut to pull it out then cut the rod off.
Take it to a welding shop.