I have had many over the years, BUT, I have none now.so looking for some, found 4. I have a guy that has 2 pair, looking at pics he sent me, 2 different backspaces. will all work on duster with oem disc setup and rear of 81/4.
I can't say what the backspace is but Ma Mopar probably only had 2 with the 15 x 7 rim.