MSD Distributor Vacuum Advance fits Chevrolet 89

New HEI Adjustable Vacuum Advance Fits all 6 & 8 Cylinder HEI Distributor

MSD Distributor Vacuum Advance for GMC R3500 87-1991

MSD Distributor Vacuum Advance fits Chevrolet 58-1972

59RG87M Distributor Vacuum Advance Fits 1959-1970, 1972-1974 Chevy Corvette

MSD Distributor Vacuum Advance fits Chevrolet 1989-1991 R1500 Suburban

MSD Distributor Vacuum Advance fits Chevrolet 1989-1991 V2500 Suburban

MSD Distributor Vacuum Advance fits with Chevrolet R3500 1989-1991