lsm125 into a lsm150

http://a.m.taobao.com/i14125240600.htm

I was given this link a couple months back when I was asking about big bore kits. Just wanted to double check it would actually fit my lexmoto str125yb. Anyone actually used one?

Also, I live in England so I'm not sure how to go about buying it. I was told to use an agent company, but I haven't got a clue where to start (doesn't help I don't know Chinese and Google translate is shit). I'm basically asking for an idiot guide to buying from China.
Thanks!

Also, does anyone know of a similar kit (all parts included) I can buy from somewhere a bit closer to home?