Why does everything go back to your rodeo? Didn't we go thru this before.....
Now for the OP, I would try your 2.5" Icons first and see if they work. You may have to crank them a little or add a small spacer but they should work. Now if this doesn't work, then I would figure out the full compressed and full extended length and order a CO that meets those specs. I am sure PRG will have an answer if you can get ahold of him.