What parts swap over

The 92 Silverado and the 98 Tahoe are of the same body parts from the front doors to the front end. Thus front interior parts would interchange also. There would be differences in the dash and other parts but generally would interchange. There are differences in the engine also as the 92 is a TBI set up and the 98 is a Vortec engine. Parts there would not be so interchangeable unless you put the Vortec into the 92 but would have to find a intake manifold to fit the Vortec engine to make it a TBI set up.