Seal kits 75536-63400 vs 75536-63600

[pspettel]

Anyone know if these two kits have the same seals? I replaced seals on both bucket cylinders with the 63600 kit (~$62 ea.), and now need to do the boom cylinders. One parts book lists both kits on both cylinders, says 63600 is "not interchangeable", another book says 63400 (~$38 ea.) on both cylinders, no mention of 63600. I would like to save some $$ but don't want to buy a kit that I can't use. Anyone used either or both?

 

[North Idaho Wolfman]

Simple and sad answer is no they are not interchangeable.