for anyone that is interested I went ahead with the WTCC kit. it was put together by Webcon UK. I now have it on my truck and it is a great carb, no hill problems like the webber, good power and reasonable fuel ecomony, when you keep your foot off the floor!!!
if you get ahold of Webcon UK they can tell you where to find one.
(email right from the website) I spoke with them directly, great people to deal with.