your best bet for ABS is to find some donor ABS in the same color. cut it into small pieces and put them in a quart paint can with acetone. mine took about a week to make an abs paste... just keep adding ABS or acetone to get the thickness you want and mix it daily. once the paste is ready, brush the acetone on the body all around the area to be repaired. try to keep it wet for about half an hour. then work the ABS goo into the repair area like bondo. it will dry hard to touch in a few hours but takes a few weeks to really cure. try to apply it in thin coats so it doesn't bubble as the acetone evaporates from the plastic. once it dries out real good you can sand it down and the color match will be pretty close
A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.