Does anyone outthere make an off the shelf adapter for a 203/dana 20 combo. I have seen Billavista's home brew, but I don't have acess to a mill.

http://jedsmachining.com/index.html
does custom work as well as 203 to 205 and 203 to dana 300

I am also thinking of doing this. Thanks for the info on Jed's Machining. When done I'll be running SM465 NP203 to Dana 20 with 3:15 to 1 gears. My gear selections will be insane but fun to learn.