Noises in my 94
 

In my 1994 Mustang there is a tapping nosie that increase with throttle. It taps slow and as your press the throttle it taps faster. Also when I am driving on the highway when I have my padel in the right spot my engine starts whistling or a high pitch noise. The spot is at about 60-70%. I push it less no noise if I push it more there is no noise it has to be that spot. Any help well be greatly appreciated.

tapping noise could be rockers or an exhaust leak..the wislty could be an asfter market TB,throw out bearing,accesory bearing..