Incorporated in 1978, S.M.S. Inc. specializes in truck and equipment sales, truck body sales, and body installations. Until Diamond Reo stopped production, S.M.S. was an authorized dealer of Diamond Reo truck and truck parts. Today, the company still carries a wide selection of hard to find Diamond Reo parts. Location Located off of I-95 in Pennsylvania, S.M.S. Inc is just minutes from I-476, the Commodore Barry Bridge, and the Delaware state line.