The new American three wheel car might be worth a look at to see how they do it. If you do not know about it they have 3-wheels also with two up front and one out back. I am pretty sure they are running anti-lock...... Personally I think the cost for your conversion is going to be to high. I would just go back to the standard brake system. Then again that is up to you and your customers, how much do they want to pay for that feature? I know lots of of people like it and some don't. Let us know what you do with it.
Buckeye, Arizona(USA) 2011 Victory Cross Roads, Black police bag guards, black engine guards, black handle bars, Triumph Tiger mirrors, Triumph hand grips, set speedo/tach back 5" , adjustable timing wheel, Lloyzz Fuel Programmer III & air filter. Modified exhaust, made stock into 2 into 1. MRA windshield, Rotated front fender forward,relocated ignition switch, Bad Ace Fuel Tank Risers, Fat front tire.