Yea, your speedo goes to 140, unless you have a police car, or highway patrol (160) or some aftermarket steeda guage, or what have you.  
 
Although im cofident a mustang can go very close to 150mph stock, but the speedo may not be exact. 
 
Id get the flow.. 3 chbr mufflers, mine sound nice, not too loud, and when i put my h-pipe on, its gonna sound just mean enough. 
 
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90 lx coupe: 175k miles, steeda water pump pully, hurst shifter, Mac cold air fenderwell, accel supercoil, ADS chip, aluminum D/S, Black magic fan, 3.27grs.  
Best time: 13.9116(on 225/60/15 firehawks) 
Best mph: 98.17 
Best 60': 1.9607 
 
next mods: subframes, mac h-pipe 
		
	
		
		
		
		
		
		
		
		
		
	
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