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		Please don't take this as gospel but my understanding is that the SPF body mold was splashed from a Contemporary Cobra body.  I owned a Contemporary and I can tell you for a fact that the rear wheel well openings are smaller than those of a CSX or ERA.  Something to do with tire availability at the time the Contemporary molds were made.  I have attached a picture of my old Contemporary which sat pretty squat along with pictures showing the rear fender lip height. 
		
	
		
		
			
		
		
		
		
		
		
		
		
		
		
	
		
		
	
	
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