Put 4:10's on a fox mustang, w/ a Vortech T trom blower, and the necessities(injectors, plugs,plug wires, ignition, etc...), and it's quite possible. I have a friend w/ a 351 W, and the above stated ^, w/ 3:55 running a 10.3. Rand a 10.1 at Fun ford a few Weekends Back
Oh, and it's street legal