i did notice something ( i thought) interesting about my feather duster, i had previously changed out the 14 in rims for 15's. i of course kept the original ones, they measure only 4 1/2 wide.!! i can see where this might give them slightly less resistance rolling!?? this car is totally original and these rims are ( to me) correct, date and logo. alsi, i did see awhile back in the forsale area where someone had feather duster alum bumper brackets, he also showed pic of what he said was alum battery tray. obviously alum but i didn't recognize it to be a mopar stamped tray??