Sources for new handlebar controls?

I'm planning on swapping out the wheelbarrow handles on my bike for something a bit sportier. I've got an idea what I am going to use for bars but I'm having a bit of trouble finding controls to put on there.

I like this guy's ( cgi.ebay.com/ebaymotors/FRONT-BRAKE-MAST...fPartsQ5fAccessories ) master cylinders.

Where do you guys get your controls such as switch housings and throttles other than scavenging off other bikes?

i like these

www.motogadget.com/en/frameset.html
click on products, then m gadgets, scoll over to m switch push button gear.
some other nice stuff on the website too.

www.redlinecycle.com is one place, www.kandstech.com is another.
Possibly www.reproductiondecals.com & www.johnnysvintagemotorcycle.com are more places

I have seen some nice master cylinders for both brakes and hydraulic clutches at www.bevelheaven.com
that have mirror mounts and I believe quite reasonably priced. Ducati stuff generally but would look good on Kawasakis for sure.