Slant 6 intake/exhaust manifold bolts

No they broke off due to age/corrosion. I have an exhaust manifold that was sold new by Dorman, it came with a bunch parts I bought a few years ago. I'm going to use it and not bother trying to get the broken bolts out of the old one. The 3 that hold the exhaust/intake manifold together along with both bolts that hold the pipe flange to the exhaust manifold are broke too.