1994 Ford Mustang GT Q&A

1994 Ford Mustang GT Question: pulleys

will i gain anything with underdrives? its my daily driver but want some more response in throttle and some power -
Answer 1
WHAT SIZE MOTOR? -
Comment 1
5.0 in my mustang -
Comment 2
YOU WON'T GET MUCH WITH PULLEYS TRY ANOTHER AVE. BBK.COM HAS GOOD HIGH PRO PARTS AND ACESS.OR SUOER CHARGER ARE AWESOME DEPENDING ON AVAIL CASH. -
Comment 3
Also a 3.73 rear gear will pep it up! Probably around 3.27 now. -
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just installed underdrive pulleys on my mustang gt and the oil pump stopped working, is the new pulley the cause of the failure?