I don’t know of a polished one. Flowkooler ha a cast aluminum, hi flow, you would have to polish it yourself. I have polished an oem aluminum timing and it came out pretty good 

. It was cast
	
	
		
			
				
			
			
				
				Flowkooler high flow pump 1641 for the Ford L6 has a CNC machined billet impeller designed with an increased vane count and a tighter impeller clearance.  It achieves greater flow rates, higher head pressure and a more efficient flow. The impeller color is due to Type II Class II military grade...
				
					
						
							
						
					
					flowkoolerwaterpumps.com
				
 
			 
		 
	 
I haven’t come across a shiny thermostat housing