did you really thinking asking in a different thread would help?
http://www.woodsbuggy.com/index.php?option=com_jfusion&Itemid=109&jfile=viewtopic.php&f=3&t=14618just kidding
i have looked around and cant seem to find the tubes either. unless you buy a whole manifold. but the tubes are useless without the ports on the exaust.
i like the idea about running oil through the manifold but not easy without full flow.
i would go with the idea of grip heaters the closer you can get them to the carb the better they will work.