Basically yes they will fit the B & E body , you would have problems in a C body though
probably the Best choice is the factory Hemi 6 qt pan , it fits well , only hangs approx 1/2" below the K frame & there is a factory skid plate to protect it that could be welded to your K frame
the Milodon 7 qt is a totally different thing , it hangs very low & is made of relatively soft material & can open up if it hits something , Milodon also offers a road race pan part # 31580 , this is the pan I have for my car however I have found it will not drop into the K frame so it has to be installed In the car ,it is Supposed to clear all steering & looks like it will But I have not installed mine yet
