Milodon Oil pan fitment

Putting a built 273 in a 71 Dart swinger. Car is an original /6 904 car. I helped a buddy install a magnum based 408 in a 68 barracuda and we had all kinds of issues with the pan hitting the K member. Can anyone tell me if the K member has to be notched or interferes with the pan? PN for pan is 30940 I believe. 8qt deep sump.