The stuff I used is called DOM16 and makes POR15 look like a sissy coating....and it's Canadian made at that...Nothin' like a thick brush-on coat for the stub. It cleaned up nicely. Looks like most of the rust skipped the stub and just headed straight for the body.
The subframe was replaced in 1999....that's when most of the butchery was done, the worst part is, it was supposedly done by a well known Mopar shop...