C-dog,
No adapter, we looked into it but it will make the shock that much shorter - so we just cut off the top and welded a new piece in there. Just a sawzall - it will be easy to put it back I suppose but with this shock it rides so much better and the shock is also rebuildable.
Very nice. I'm glad you did this, as I've been wanting so badly to do so myself.
I'd love to fit a 2.5" shock. Do you see potential clearance issues?