Re: P71 rims
They all have the 5x4.5" bolt pattern from 1982 (I think- not positive) on up to the brand new ones.
None run more than a 7" wide wheel stock, so you should be good to go as long as it's stock. If you want wider (like Cragars) you need to be sure there is NO MORE than 4.25" backspacing. I'll be running 15x8s with 4" backspacing, come March.
...but if you can score some police wheels, do it. They're fantastic.