Judging by the original trunk in my car, the splatter paint was applied very hap-hazardly, almost like an afterthought on the line. I wish I'd taken photo's of it before it was repainted, but it was not done well. The quarter panels had some sound deadener covered with a spritz of dark grey/grey splatter paint that did not go all the way up. More like just as far as the painter could reach. The top of the quarters up to the roof were bare steel and rusty. I had my painter spray POR 15 up in that area before the splatter. I chose to cover the entire trunk as total originality was not a concern. The paint I got was from NPD, #AP-500. There is also a clear coat for it, #AP-501 to improve water resistance.
Getting off subject, but still important to trunk refinishing, make sure the drop off drain valves are open and clear. Replace if necessary!! Rear light sealing should also be done imo as this is where water gets in. It is not enough to rely on the foam seals. Mine are totally sealed around with black RTV as well as a thin bead of clear RTV around the lens and the aluminum interface. I have zero water getting in the trunk now. Red arrow = black RTV, yellow = clear RTV, very carefully applied! Better yet and what I would do next time, is to strip the assembly , refinish and seal as it's being put back together. 2nd pic is a stripped assembly.
Geoff.