Swift Rear Coil Spring - Bulletproof - 5.0" OD x 11" Tall - 175 lb. SS-M1-OTU this is the adapter you

this is the adapter you need

Not compatible with Bilstein shocks

High cornering forces can force the gear lube out of the center section and down the axle tube leaving the ring and pinion high and dry

4150 flangeSince 1938

Increases Fuel Capacity

Swift Rear Coil Spring - Bulletproof - 5.0" OD x 11" Tall - 175 lb. SS-M1-OTU this is the adapter youPURPOSE BUILT FOR THOSE OF YOU PUTTING MORE STRESS ON A SPRING THAN HOW IS CONVENTIONALLY USED. WE SOUGHT AFTER A NEW APPROACH IN DEVELOPMENT FROM OUR REGULAR SUSPENSION SPRING. Swift Springs manufactures springs with differing rates for a variety of circle track racing applications. With options for both dirt and asphalt tracks, Swift has a wide range of coil spring formats, including coil over, dual rate, bump springs, and more. Swift Springs