i'm currently looking for a 96-98 cobra for a daily driver, i know alot about fox body or 5.0 performance but not alot about the 4.6 will a supercharger gears and full exhaust get me into mid 12's?? also whats the best gear for these cars i'm thinking 3.90 or 4.10 however i do want it to be extremely streetable thanks for the help guys