Mixing of Sante with other components is atypical, but apparently it is original. Sante puts the bicycle during the period 1987-1989. I do have literature for a 1987 SR-5000 showing Sante derailleurs mixed with 600EX crankset and Dia-Compe 400 brakes on a Tange #1 frame. It sold for $849 US and had an advertised weight of 21 lbs. The color scheme is typical of the Sante equipped bicycles, which emphasized appearance, trying to attract the boutique crowd by cashing in on the Miami Vice trend.