Lunati 73117-16 Dual w/o Damper Valve Spring Set 1.550 OD

Comp Cams 917-16 Valve Spring Dual 1.550 in. Outside Diameter 566 lbs./in. Rate

Isky Racing Cams 9315 Standard Dual Valve Spring Set Outer OD/ID: 1.550 in./1.13

Manley Professional Dual Valve Spring 1.550 In Od 16 Pc P/N 22431-16

Engine Valve Spring Kit ISKY 9315

Manley Performance Products 1.550 Pro Dual Valve Springs 22431-16

Manley 22407-16 Engine Valve Spring 1.437 Double

Engine Valve Spring fits 1959-1981 Pontiac Firebird Bonneville,Catalina Grand Pr