hi steve,
i went 3 phase with a t160 then added the whole loom, switchgear and rectifier of a suzuki gs750. went neg earth and very reliable . later used gs750 clutch cable , lever and then mikunis using a home made manifold. turned a good bike into a great bike. however many dont care for that sort of change to marques. i have a gs750 as well and both these bikes will cruise 100mph all day and handle. i ve yet to get the same performance from my a10 .
65 - 68mph all day.
norton commando switchgear is supposed to be good.