NEW SOUTHWEST SPEED RACING CARBURETOR THROTTLE LINKAGE RETURN SPRING KIT, POSITIVE RESPONSE FOR RACING APPLICATIONS ONLY, MODIFIED, LATE MODEL, STREET STOCK, FACTORY STOCK, MINI STOCK, GRAND NATIONAL Brand New Southwest Speed Carburetor Linkage Return Spring Kit (SWS Part # 410-995) Throttle return kit Bolts to carburetor Positive response Includes 2 different spring tensions