Nearly all E-body interior panels (70-74, consoles, seat backs, kick panels, and misc.) are injection molded from Polyethylene plastic, a very slipery/waxy material which is
SUPER resistant to petroleum based products and other chemicals (red plastic gas cans are made of the same stuff). So, paint doesn't stick to it well either. If you do a good surface prep (clean it 20 times over with a
GOOD oil and grease remover) and
LIGHTLY media blast the surface to rough it up (I use glass beads or fine walnut shell in a blast cabinet on the
absalute lowest pressure setting). If you do this the SEMS product should last for many years before it degrades and starts to fall off (which it eventually will as
NOTHING sticks permanantly to this plastic! Any paint is simply a topical coating).
Good luck!