imagine2frolic,
Mine are a two point mount. There are four bolts that connect the side pipe to the header collector and then there is a solid mount back behind the door that has a bolt with two insulators holding it to the frame.
In my case, I found a mine shaft in a parking lot and that ripped the pipe at the weld. Then about 1000 more miles of bumpy, nasty roads ( Welcome to Michigan ) and the pipe broke completely off.
The other one was a spot crack.
I have the car ready to take on the road, now all I need is the weather to cooperate.