Not really that expensive
You'd need
Top toke from naked bike
Clutch cable from naked bike
Throttle cables can possible be re-routed(I think) but I have always just bought/arquired naked throttle
Choke cabe , I'll just re-route infront.
Alternatively, their are ready made kits out there. Someone will be along in a minute with links and possible prices

but I'll see if I can find any.
Ben