I just recently purchased this 89 gt and decided to stick with an all ford streetcar setup insted of the sbc swap i've had in my two other fox body mustangs. This car was bought for that reason but was so clean and mechanically sound i would hate to do that this time. It already has a hurst short shift kit , 3.73 geared rear, but motor seems to be all stock. I want to do more of a factory upgraded setup on the motor like a cobra top end or similar. Any ideas or opinions on what i should change or purchase ??