So after all of your help with information and photos I think I have gotten the conversion figured out for my Avid Flyer model B so I thought I would post up some pictures of my progress just in case anyone else was interested in attempting it themselves. ye old disclaimer, this is only my way of doing this conversion and if you decide to try it yourself and die its not my fault. there now you've been told. have fun and be safe. The main mixer unit is located under the left seat... Hopefully the pics can say the rest.