4 bbl manifold and carb places the throttle connection stud farther forward than a 2 bbl. You can deal with the throttle bracket by using a 340/360 bracket or modifying a 2bbl bracket. Transmission kickdown lever is most easily addressed by an Edelbrock extension that screws onto the threads of the original kickdown rod and then you screw the slotted kickdown end piece into the extender (or cut and weld two rods to move it farther forward). 2bbl throttle cable works fine...
