Best valve body for street/little strip 727 torqueflight

Who makes the best valve bodies for a torqueflight 727 in a 400 hp 383. Are they reconditioned or new? Street strip (I want to be able to get a smooth shift in Drive, but be able to shift with slap stick without tearing it up. No racing (on track). I have a race kit in it now and it won'f downshift until a complete stop. Accelerating in 3rd at 5 mph just doesn't seem right. Right now it has a 2400 TC and a 3.91