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		I would try the short stack, but don't touch the auxilary. 
 
It shouldn't matter if the auxilary is taller for a test. 
 
The main thing is to keep a bellmouthed entry to the carb throat. 
 
Have you thought about solid engine mounts? 
		
	
		
		
		
		
		
		
			
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				Gary 
 
Gold Certified Holden Technician
			 
		
		
		
		
		
		
	
		
		
	
	
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