Where to get spare parts in Miami

For my Chevrolet Transport 1998 3.4l I need some spare parts like tail light, set for the brakes and so on. Transport is/was sold as Chevrolet and not Pontiac; tail light will be different in Europe. Is there a shop around Miami selling this spare parts our should I order them first?
Also I am looking for Swageloks to fix some of my air-condition tubes. Where can I easy get them?

Josef