So I just had the carburetor rebuild (I just don't know enough about them to do it myself), reinstalled it, fired the Mustang up; and she is still leaking fuel. I attached a pic of were too. I think that is where the front pump is, no positive. Anyone know what I can do to fix this? Like I said it was just professionally rebuilt.

 

the flat head screw that holds the bowl on has a rubber Oring .. that may be leaking .. the pump gasket looks new ..

 

The fuel is actually shooting out from between the pump and the housing. I've tried tightening it but still no luck.

 

I had an issue like that. I had to replace my float. It had a tiny hole in it.

 

one or the other is slightly warped then .. check it and file it flat .. there may be a thicker pump gasket available ..

 

I would take it back to "the professional" that you paid to rebuild it!