I converted to a serpentine setup but, I do not know what vehicle it is from because I bought it a long time ago from a member here. I vaguely remember you had to use certain years to make it fit properly in our cars. It looks like it is from an early 90's Silverado. Is there a way to tell what vehicle it is from so I can get the right replacement pump? Maybe a number cast into the bracketry? It would help if I specified Power Steering Pump.