On my road runner w/ the 440 in it I used a normal Melling pump w/ a Milodon cover. The rear facing pickup inlet will not work w/ stock style mount brackets on the K frame.
I used the inlet off the "top" of the cover, faces to the ground at about a 45° angle if looking from the front of the car. The line had to wrap around the K frame to get to the pan.

I'll try to get some pics of this and post them.