Can't find it
			 
			 
			
		
		
		
		Is the nipple running verticle?  On the passenger side of the lower manifold I see a regular bolt that is in the torquing sequence.  Then I see a larger bolt with a weld on it.  I wonder if this nipple is threaded.  These guys could of unscrewed it and ground off the nipple and then put a couple of welds to seal the hole. 
		
	
		
		
		
		
		
		
			
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				If it isn't broke you are not trying.
			 
		
		
		
		
		
		
	
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