If I can choose from 2003 to 2007, wich one to buy?

Hi, I want to buy a P71, and a guy here has several, from 2003 to 2007 models.All of them with 100000+ miles. So I'm asking you guys, what year is the best one to buy?
I can invest some money later, so if you tell me what to do after buying the P71 and change oil, antifreeze and transmission oil I appreciate your suggestions.
Thank you a lot!!

I own a 1997 P71. Any can be considered like a Super-Duty Mustang GT, and costs are parts reflect that. Most parts are made to last 100k miles or more. Its not unusual to see highway patrol units with 200K miles when they retire them.

Of the newer cars, my preference is the 2003-2005. Most of the parts from the Mercury Marauder will fit with no problems. Several website provide info on these cars.

Just remember to change Oil every 4000 miles or 4 months, Trans fluid every 15,0000 miles, Coolant every 24 months, Hoses every 3 yrs, and Serpentine Belt every 3 yrs.

Try www.p71interceptor.com for much more info. Abd www.crownvic.net for lots of info.

Also, look at http://www.crownvic.net/drock96marquis/index.htm for hot rodding.

Thank you very much for your advice.
I just bought a 2004 P71 from New Mexico Police, with 124000 miles on it. The exterior needs some work but the engine sounds excellent.
I will post some pics this week.

good car, i just bought a 2005 and i'm loving it.
trips to the gas station not so much.