I'm just saying that the new, lighter  Yami 300 could work on a V21. 
 
 Generalizing with 8-10 mph speed increase per 50 hp, I'm still thinking 65 mph top end. 
 
 This is with the standard transom,  not the bracket. 
 
 Using the tabs and engine trim, calm water 50 mph " cruising speed " should be fairly easy.
		 
		
		
		
		
		
		
		
		
	
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