As for turning the hub .. I'm not a machinist .. but I assume thats all it took for him to do it ..

Not a free floatig caliper I can think of .. it has to follow the rotor when you adjust it .. so it needs to be connected .. I would think ..

Thats what I've always done anyway .. You can have smaller brackets made..

The 750As are 17x2.15 ally rims..

Satndard 19 spokes: $75
Custom 17 spokes: $90
Fr. wheel bearings: $15 (pr)
Rr. Wheel bearings: $30 (3 of them)
Stem Bearings: $35 (350s are the same as 750s)
350 gasket set: $40
350 Pistons .. (can't help ya with these .. Maybe Psycho Ex ca. ..??)
As for the controls .. if you want the master and switch housings and all .. Ebay has them floating around for like $100 I believe .. All I have is the bare bones stuff Throttle: $15 and the Barnett clutch ..levers for $35..
http://www.lowridersbysummers.com/