1.284 Dual Valve Springs (16) 1971-chevrolet-chevelle-esi6143905 Designed to be used with

Designed to be used with Side Inlet/Center Outlet mufflers such as part# 943046 (Super 44 Series) or 943051 (50 Series) mufflers

smooth idle and great throttle response just to name a few

Blow Off Valve - Deceptor Pro II - Cabin Adjustable - Mounting Flange / Diverter / Trumpet / Whistling Included - Black Anodized - Subaru STI 2003-22 / WRX 2001-07 - Each

Nose - Complete - Plastic - Chevron Blue - ABC NextGen - Kit

Water Neck Spacer - 1 in Thick - Two 3/8 in NPT Ports - 1/2 in NPT Gauge Port - O-Ring - Aluminum - Clear Anodized - Chevy V8 - Kit

1.284 Dual Valve Springs (16) 1971-chevrolet-chevelle-esi6143905 Designed to be used withValve Spring 1500 Series Circle Track Dual Spring 560 lb in Spring Rate 1. 090 in Coil Bind 1. 284 in OD Set of 16