HI, my new rear fuel tank for my s3 has three large holes on it, 2 for that are connected with rubber pipe to prevent airloc and one for the main fuel pipe. It has only 1 more pipe which is to connect to the sender unit. So for fuel spill, it is possible to return the ecess fuel in to the top of the sedimenter using a banjo type pipe. (i can't see any other way of returning it the fuel I don't know if you do)


Ollie