They are grandpa cars. I have seen a total of 3 marauders in my life. And every other car you listed i have not seen anyone under the age of 65 driving one.
EDIT: Yes... they are v8's and i do give credit to marauders... but c'mon.
I don't own one, but I know a little about them. If your going to have engine groups then you should put 4.6/5.4, 5.0/5.7, and probably other for the really old crown vics. Even though they never came with a 5.4 theres some who've put one in place of the 4.6's. What type of info are you looking for, or is this an attempt to gain support?