New to the site and I have a few questions about a project I have in mind. I have always wanted a used police car since I saw the blues brothers movie with the 1978 dodge monic in it. What I would like to do is get a either 03 or 04 police package crown vic with the police paint, pushbar, etc. and take the necessary parts out (engine, transmision, etc.) and replace them with mercury maurader parts wich would have 300hp instead of the police crown vic's 250hp. another reason i want to do that is i have seen superchargers for mercury mauraders but not crown vics or marquis.
So my questions are:

1. Is any of what i just said possible or plausable,
2. what parts would i need to replace with maurader parts to get the 300hp and the possiblty of adding a supercharger.
3. Even with maruarder parts could i put a maurader supercharger on it or is it really car specific.
4. How much is all that going to run me (if possible) minus the cost of the car.