That appears to be £800 for a rear light, handlebars and front mudguard!
A quick gander on fleabay, motorcycle parts "AP50" suggests you'll spend almost that again on parts + whatever paint costs.
Probably a lot less grief and not much more £££ to buy one already done
Or this fresh off the boat from Japan, costs less and needs less work
http://www.ebay.co.uk/itm/Suzuki-Col...gAAOSwPcVVk9Ds