AnAlternateEgo:

I had to order them direct for CJ. They cost about $280. You get the whole system. Air tank, control valve, filler valve, retract and struts. Yes, I know that its more than you paid for the plane, but that is the way it is. Mine were Top Flight P-40 struts with the strut made 1/2 inch longer. Other retracts might be easier to install, but these were the ones I was farmiliar with.