You could consider Ford
I had the Ital Disc conversion on my Blade and wasn't all that impressed TBH
The alloy end caps were nice as were the billet Hubs but when I had a problem with the gearbox, both the half shafts/tapers/keyways span and destroyed the nice looking hubs.
I also saw another Blade (that had a Gixer motor in it) that had also buggered the hubs (telltale swarfe/grease under the hubnut) The allen key arangement that stopped the H/S moving inwards also worked loose periodicaly. Also Disc runout was not perfect although that could have been slightly bent half shafts but this would be difficult to remedy in a lathe. Couple that to the other issues of the Axle and I feel the Ford is a better way to go.
I found the conversion cheap and easy, I don't really understand why people want to persevere with the Ital unit.
The disc conversion is cheap and easy, the 1/2 shafts are easy to true in a lathe, it's bigger in the right places, the bearing design is better and it all fits easily and cheaply.
See My Caterham Fireblade Here.