wpb 160 2win with yx engine -

i have a wpb 160 2win pitbike with a yx engine its and amazing and super fast bike if you go to www.welshpitbikes.co.uk you will find full specs on there and see that its a quality race tuned bike i brought it for 800 but only want 350 as it needs to have the spark plug port tapped i dont know how to do this and havent really got time to look how or take it to get done also i dont have time to use the bike i will miss it when its gone text me on 07592099155 try calling if i dont answer just leave me a text or voicmail and i will get back to you thanks o price is 350 ono