You may want to consider adding something like this to the beginning of your process..After you get a lot of the trim off, wash the car good with a strong detergent, rinse well, and then wipe it down with a good wax and grease remover.

1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)