1993 Buick Regal Owner's Manual - Page 189

Front Towing Hook-Ups (Custom Sedan Only) Attach "T" hook chains in front of the wheels into the side slotsof the cradle on both sides. Position a 4" x 4" wood beam across the sling chains against the bottom of the cradle horns. Position the lower sling crossbar againstthe front of the 4" x 4" wood beam. Attach a separate safety chain around the outboard end of each lower control arm. 1 A I 187