What headers for a 6.4 genIII in a 70 Duster?

dont tell me that about the pan. thats the one i ordered for my 72. oh well guess ill have to figure it out. maybe have to modify the pan.

Sorry. The simplest fix is a 73+ centerlink, idler and pitman arm. You don't have to change the k-frame to run those parts, they all bolt in. Even your tie rod ends will work. It's money, but might be easier than notching aluminum pan.

Also, that pan has some control channels on the inside of it that would get cut if you had to notch it.