Abbreviation manifold ABH cracks

Hey, guys.

I recently found out with horror that the left exhaust manifold has a crack on me, and a cable boiled in with the protective hose around it, so it plows out there! ( What kind of sensor is this over the left drive shaft when the hand is switched? )
My previous owner lowered the car and unfortunately didn't pay much attention to the obstacles, so I had developed the X-pipe because it was torn in various places at the welds which probably resulted from all the forcible deformations, and took this nicely after.

Is this a known problem that the welds of the X-pipes or crackers tearing? ( Or are these really just damages from breaking up on obstacles?? )

How big is the effort to expand the manifold?
Seals? Are the bolts pulling?

Green Sascha