i have a 1929 tudor sedan body that has a custom frame of 2"x4" 3/16" wall tube, will be running a 460 ford with aluminiun intake and water pump, cast iron heads, no bumpers, fenders, or hood, aluminium radiator, no power steering, light interior, my question is for the traverse leaf for the front end do i need a heavy spring or a standard spring. i have been trying to research spring rates and other info with not much luck any help greatly appreciated, thanks