DriveWire has a hige inventory of Chevrolet Caprice distributor caps including OE and Bosch. If the Chevrolet Caprice is misfiring the likely cause is the distributor cap.
Any time the Chevrolet Caprice ignition wires exhibits physical damage either to the ignition wire or the boots, the Chevrolet Caprice spark plug wires should be replaced as preventative maintenance.
Chevrolet Caprice Copper and Platinum Spark Plugs by Bosch, Denso and NGK. Replace the Chevrolet Caprice spark plugs once a year for optimum vehicle performance and increased fuel mileage.