i just sold a bsa victor -one of the bikes i brought in from the usa.have sold running bike for 3000.oo.the owner has asked us to turn it into a mx bike,so it has been stripped,and excess metal removed bits added to it,rickman matisse seat,sidecovers,mudguards(we have access to moulds)rewired it,new battery and mount,have seat made for seat base,new tyres,tubes,handle bars,grips,cables-all made,levers,perches,etcpaint it and it will owe around 5600 including the bike would be cheaper if you did the work your self but hey the new owner is 77 and we will have to start it for him.get a cheaper base bike and you could build it even cheaper.i think we cut out about 25 kg of crap out of it this includes old seat gauges,headlight etc