RE: Hobby engine LEOPARD A25/A26
Here is a link to a thread I did awhile ago. Might give you some ideas.
[link=http://www.rcuniverse.com/forum/m_9995346/mpage_1/key_/tm.htm]HE Leo conversion[/link]
[youtube]http://www.youtube.com/watch?v=r7u6YFI9sXk[/youtube]