R ross New member Jun 16, 2009 #1 89 mustang gt. 5.0 H.O.. Headers and H pipe w/ no catalytic converters is all it has done to it.. other than that. it's stock. What's a round about top speed for this car?
89 mustang gt. 5.0 H.O.. Headers and H pipe w/ no catalytic converters is all it has done to it.. other than that. it's stock. What's a round about top speed for this car?
