Guess it depends on what movie your going for, probably doesn't matter, a suit is a suit. Only problem would be a badge and maybe an I.d. Wallet for display, bashing with just a suit is easy, but the badge and whatever else is the problem, I would think my idea of a full set is probably a bad idea, as others would like to do a different frank bash than the next guy.
And finding a suit is the easy part, and gun, but the badge and I.d wallet would be nice. I have a pic of my f.d, in an earlier post with an I.d wallet, but it's a die hard, not even close for frank, but I wanted to display him with something else other than just a gun.. If you could pull off those jonny that would be great.