I have a 306 in my 90 Lx and was told by my local mustang shop not to put in a high volume pump. It is unnecessary on the street and it costs Horsepower. It is possible that your front seal is just going bad prematurely. I don't think the pump would cause that problem.
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Black 1990 LX DSS Racing Super Pro Bullit 331, AFR 185, Anderson B31 Cam, 1.6 DSS rockers, Cobra Intake w/ 2 phenolic spacer, Aluminum DS, 3.73 gears, Tremec 3550, Lakewood SFI Bellhousing, MSD Digital 6+, Spintech Side Exhaust,
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