Exhaust Block Off Plates Standard 23 Deg Plastic - ALL34213 2A/5 - Double Layer -

2A/5 - Double Layer - Fire Retardant Cotton - Black - X-Large - Each

5 in ID - 12 in Length - 150 lb/in Spring Rate - Steel - Silver Powder Coat - Each

5 in ID - 8 in Length - 1200 lb/in Spring Rate - Steel - Red Powder Coat - Each

Crank Trigger Kit - Flying Magnet - Magnetic Sensor - Trigger Wheel / Pickup / Bracket / Hardware - 8 in Balancer - Big Block Chevy - Kit

Crank Mandrel Drive Kit - 4 in Long Mandrel - Guides / Hardware / Spacers - Small Block Chevy - Kit

Exhaust Block Off Plates Standard 23 Deg Plastic - ALL34213 2A/5 - Double Layer -Exhaust Port Blockoff 1 Piece 1 4 in Thick Plastic Black 23 Degree Head Small Block Chevy Pair