Silliest Thing You Ever Put On Your Mopar ?

Not my car but my Dad's. I went to the NY Auto show back in the early 60's and bought a piston to put on my Fathers stick shift flat head 6 car. A lot of pleading before he buckled under to let me put it on. It was also a 2 door station wagon with the only options were a heater and AM radio. But that piston shifter changed the whole personality of that car.