Is there any experience with fitting an 85-87 dash to an '84 4000 S car? Does anyone have a r. rear fender extension which is part of the three piece rear valance under the bumper? Does anyone have n NOS or good used '84 dash or possibly an '85-87 (see above) ? Lastly, will the rear sway bar from the '85-87s retrofit to the '84 and if so, do you have a used one? TIA Dan King