Where to start....well, here's the radio part I cut out the 1.5 DIN opening, glued the trim ring and put a rough coat of filler on. Sanded down and threw on 2 coats of slick sand Sanded that down and did a test fit before urethane primer and basecoat/clearcoat Urethane primer sprayed, wet sanded, and basecoat/clearcoat applied.