225/slant 6 exhaust bolts broken

No, these are the bolts that hold the exhaust manifold to the engine. I think there about six in all. The ones on the ends have broken off and the exhaust is leaking, making the engine loud. The entire exhaust system is less than two years old and the car is stored indoors all winter. Thanks for your help. If he can fix his backhoe, I think he can do this! :)