Rams are cheap, and tapping the box is easy. Machine shop should be able to do it for under 60 bucks (it's just two holes and taps) 2" bor 8 " throw hydro ram is 49 dollars if you know where to go.
I'm worried about my knuckle too, I'm trying to find a spare one I can stress test, then find a pressure release valve that will spew hyraulic fluid before it get's there (would rather add fluid than loose full mobility)
Also, supposedly there is some trick with washers on the inside and outside to limit the travel to that of a 6", which could be removed later for the dana 60, but then again 50-80 bucks isn't all too much to spend later.