I would be interested in a Model A engine for a Pober Junior Ace but have a few basic questions. 1) Does this motor need to be greatly modified for aircraft use? It was used in the Piets often, which were built on budget parameters. If yes, what is involved in the operation? 2) Does it have adequate hp for an aircraft that typically uses a C-85 (for example)? 3) How much do the Model A's weigh in comparison to a C-85? 4) Are they reliable in aircraft applications? and 5) Are they readily available? Thanks!