i have some real questions about my mustang. i have a 1994 mustang gt with a 5.0 liter. its convertible. i have done an auto to manual swap and i have installed cold air induction and a horsepower chip and throttle body spacer. anyways i have a leak on my rear end differential and i want to fix it. someone is offering me some 373 gears. will they fit and is this worth it since i already have to be down there to fix the seal. i also have an oil pan gasket leak how hard is this to fix