Will 1997 suburban exhaust fit on a silverado?

No, a 1997 Suburban exhaust system will almost certainly not fit a Silverado of the same year (or even a different year). While they share some GM parts, the body styles, chassis, and potentially even engine options are different enough that the exhaust system's routing and mounting points will be incompatible. You'd need an exhaust system specifically designed for the Silverado.