Your Aeroflow Performance dual EFI pump compact surge tanks ( AF77-4244 and AF77-3244 ) can now be converted to accept the popular smaller diameter (40mm) fuel pumps in today's market. These fuels pumps not only feature up to date technology but allow even morefuel flow with exotic fuels for more demand on higher horsepower configurations. These work great with the Aeroflow Performance smaller diameter fuel pump AF49-1041, AF49-1042 and AF49-1057. This conversion kit includes a new fuel pump bracket holder with stalk, new wiring bulkhead terminals and new design top plate to replace the old one in the surge tank.