I would recommend to just buy a new ram/s as well. When you rebuild a ram like this, they new seem to last and leak end up leaking. When someone orders a ram like this, measure the dia. of the mounting pins, different sizes. Also might want to replace the outside lines since you will have them off as well.
I would buy 2 of the newer style (P/N:845739a10) and call it a day. The only problem for the boat above is, they come painted black, so they will need a paint job! -Eric