Tassie must be where all the Auto/4s go to die! ....The axles are cool,But im liking the custom rear Exhaust better...Ive No Idea on the Number,never seen a U prefix...Definately Period Number stamping though. A misprint would make it maybee 161,127 to high for Auto. Special order possibly?.
Who knows,but something different! Im always looking out for unusuals,Gives more to research.