If it is a 92 with a 92 motor then you don't have the short nose. http://www.miata.net/garage/crankshaft.html
check the parts catalog that is available on mazda motorsports for the correct application
			
			
			
				
					
						
					
						
					
						
					
				
			
			 
			
				I think it would be the short nose one, with the keyhole . Mines is a 92 1.6 manual if that helps, thanks.
If it is a 92 with a 92 motor then you don't have the short nose. http://www.miata.net/garage/crankshaft.html
check the parts catalog that is available on mazda motorsports for the correct application