1958 CHEVROLET CORVETTE CONVERTIBLE. THIS EXTREMELY RARE CORVETTE LEFT ST LOUIS IN 1957 AS A 283/290 4 SPEED WITH THE ULTRA RARE RPO-684 HEAVY DUTY BRAKE OPTION. ( 1 OF 144 ). CURRENT POWER PLANT IS A VERY GOOD RUNNING 1960 283 WITH 4 SPEED AND POSITRACTION REAR END.... via Carseva