Alright, school me on stock roller cams....

Ok, been looking for a 318/5.2L .432 roller cam to put into a 5.9 ever since I read about them to get a little extra something out of an otherwise stock setup.

As I understood it, these were PRE magnum cams. So, I pulled one from a 85 5th ave and it measures 0.390 (.260 x 1.5).... ?? Are the .432 cams in fact, found in the 5.2 magnums?

I know I can get a regrind or new cam altogether, (leaning towards a regrind at the moment) but I'd just like to get this information correct "just because"....