tti header clearance problem

hi all. as far as parts, everything on this car is new, tie rods, idler arm, pitman arm, steering box was rebuilt, all new mounts motor, trans. , new conversion kit to front disc, which gives you new upper arms, spindle, all new bushings, rebuilt upgraded lower arms added a/m swaybar.shocks, after the last tweek I think just to get a little more clearance I will dimple that tube, I am not sure what a good gap should be but I think it is still on the tight side.