Like Krazy Kuch said,engineered beams or steel .You wouldn't want any warpage or twisting. Also is this going on a concrete floor? This is going to weigh as much as a 73 Oldsmobile Custom Cruiser station wagon. I know, my dad had one. Would you park one in your living room? 
		
	
		
		
		
		
			
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				Steve
			 
		
		
		
		
	
		
		
	
	
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