Filter Filters Buick Reatta Remove All Filters Price Under $50 (2) Condition New (2) Brand Harmony Audio (1) Metra (1) Buick Reatta 1990 1991 Single DIN Stereo Harness Radio Install Dash Kit Package $30.95 Buick Reatta 1988-1991 Factory Stereo to Aftermarket Radio Antenna Adapter Plug $5.95