For 1973. the Challenger remained almost untouched. It had revised grille insert and large rubber bumper guards to meet safety bumper regulations. The slant-six was no longer the base engine with the 318-cid being the base. You could get a 340-cid V-8 as an option as well as a 4-speed transmission or a TorqueFlite automatic transmission as an option too. You could still get the Challenger Rallye as an option package. It had side scoops behind the front wheels and strobe-type tape stripes that ran the full length of the car. TRUE SURVIAVORGARAGE STORED FOR LAST 20 YRSNO RESERVE AUCTIONANDREW@ 902 368-2892 FOR ANY DETAILED QUESTIONS