I have a hemi four speed that came out of a low mileage 69 RT many years ago. It has TWO crossmember mount locations, one for the 69 and one for the 70. It only has one shifter mount location at the front. I bet yours is the same way. I was told it was it was a transion part to finish out the old style and getting ready for the new. I bet that is what you have. Look and see if you have two mounting pads.