[8D]Well I just received a new in box nitro .46 size marine engine to put in my Shockwave 36[>:]he he I finally won a bid on ebay So I need to get a motor mount and collet and I will be all set to do quick change outs with the stock and .46 engine. I do have a question for the experts such as Ron, going up in engine size I would think would call for a larger prop size, stock for the dynamite .32 is a prather 230 going up about 25% in power I would figure a starting point of maybe two or three in size such as a prather 240 or 245?? Some feedback would be appreciated. thanks Butch in Niagara Falls