My prayers have been answered! I have been months looking online for someone that has installed police interceptor wheels on a 71-73 Mustang and have come up short. I have a set that I've been wanting to install on my '71 as well, and haven't bought the tires yet out of fear that it'd be a waste of money if they don't look right. Until today, that is. Now I see they look pretty badass. Agreed that a bit of spacing is needed, but overall, they look great. Thanks for the post, and for removing all doubt about CVPI wheels on a Mustang. Unfortunately for you, though, you won't be the only one rolling around in police wheels haha. Cheers!
EDIT: Got side pics of the car?