Solid steel engine mounts for racing only. Fits early Cutlass 1964-1969 350 and 455 and 1970-1972 350 engines. Sold each. Mounting holes are 1 1/2" apart. Use with DMR-38070 transmission mount when using a full roll cage. Not recommended for street use unless running a DMR-5300-RM rubber mount. Use on drivers side to eliminate the need of a torque strap. Not returnable if mount has been used or bolted on. Be sure it is the right mount before bolting on.