Ole Norton Upgrades

I would like to know if there is access to the following Ken Dreer parts or ideas, whether there are plans, old parts catalogs or other distributers of the following:
1. Beefed up Crankcase halves for 72-74 850 Commandos
2. Plans or parts for single rear axle
3. Best Head rebuilder for better flow
Tx

#1 is on this site. Get a hanky for the drool http://www.stevemaney.com/index.html
# A Honda 350 axle is good I am told. Bearings are ready all the spacers have to be drilled Talk to Mike T for Details Brit Iron site out of Ill.
#3 Baisley out of Calf. Probobley still has Kenny Dreers CNC program to run on old Norton heads. Or you could just hook up with Jim Comstock out of Colorodo. for some D shaped exhast ports Way less money and a lot of bang for the buck.