Hy Clutcheadstew, I'm sure we could find some spring brakes that would work for your application. Just to clarify the operation, once the air in your system drops to approx. 60 p.s.i. a valve trips which releases the air holding the spring brakes in the non applied position, a spring then applies your rear brakes. To get the brakes to release again you will need to have over 60 p.s.i. in your air system or the brakes can be released manually with a special tool called a caging bolt, hope that helps.
