Ian E knows his stuff mate its him that prepares all the race quads over here, quite expensive tho, but real good quality! I would weigh up your options, if your getting a 240 big bore from vitos you would be as well getting the ported one from KOR, its about $700 plus shipping then u'll want the 3mm strocker crank thats about $240 shipped, your duty and vat on that will be alot so be careful and check with hmrc before you order, then you need some one to put it all together an thats normaly around £60 a hour at a decent place, speak to ian an tell him what you want and he will tell you what it will cost, to be honest the guy has got a great rep so it will be same quality as KOR i would say, i am looking in to getting him to do work because i just got hit with a vat and duty bill of over £150 for £320 product so can you imagine what it will be on £0000
Hope this helps!
SteveiN
Oh an he uses vitos stuff so might be worth while getting him to import the stuff you need ;-)