here's a link to what I had experimented with for the A12.....that still needs finished.

Anyways, Shafco makes some spray on cosmoline that is like original. I had to spray it about 15 times over the course of a week to get the look I wanted.

Only issue, its tacky and will attract dust.

https://board.moparts.org/ubbthreads/show...rue#Post5111652

Wish RPM was out at the time I did these a few years ago.