If I remember correctly, we were not able to run the Milodon pan. It didn't fit in the car. We had one of the first Milodon road race pans and we were told it would fit the late model K frame but it didn't. We didn't want to pull things apart to modify the K so we went with plan B. I think the Charlies pan had some issues but so did the Kevko pan and the Milodon didn't fit. This was 10 years ago so my memory is a little blurry but I do recall a constant battle with the oil pans. If I was going to work on a car like this again I'd start by carving a bunch of space into the K frame and then work from there.
