CHEVROLET 30 VAN 88-89 SRW, 14 bolt cover. CHEVROLET 30 VAN 90-92 SRW, semi-floating. CHEVROLET 30 VAN 93-96 exc. 30 HD; SRW, semi-floating. GMC 3500 VAN 88-89 SRW, 14 bolt cover. GMC 3500 VAN 90-92 SRW, semi-floating.