I am wanting to know the correct part number for the air cleaner base for a ‘70 440+6 WITH fresh air? I have a non-fresh air base now and will cut the shield off. The air cleaner top has a part number (#2946393) and I believe that to be correct. 
Did the fresh air base ever get stamped with the part number and “Made in Canada”?
Thank you,
Wallace
	
		
			
		
		
	
				
			Did the fresh air base ever get stamped with the part number and “Made in Canada”?
Thank you,
Wallace