Pretty sure the only way to get that setup now is to buy a complete trans for $3600. Can't find just the gears and cluster on his website anymore.
Funny thing is, with a 3.09/1:1 box you get similar results. Might not be as strong, but could be a fair amount cheaper. Just run a 3.23 rear gear and it is a close match the Hemi OD with 4.10.