I have a 6'' dick cepek lift kit and i'am thinking of changing the rear springs because i have a rotted spring hanger and and can't move the bolt.So my question is do i need 4''or 6'' springs,becuase i put 2'' springs in my '79 for a 4'' lift. Mabey some might have an idea on how to get the bolt out of the spring bushing or just replace the bushing and same my self some $$. Thanks for any answers.