Hey I'v'e got a 67' coupe. Dropping a 331 in and I should have close to 380-400hp at the crank. Rear-end is done and I have front disc brakes. What are essential suspension mods for traction? I've seen packages for around 400$ that come with sway bars, springs and shocks. Some suggestions would help as this is the first suspension upgrade I'll have ever done.