The thread on cap on the engine coolant reservoir is the pressure cap ( radiator cap )
Behind radiator Behind fan blades
It's on the coolant reservoir. Do not open when engine is hot.
Its in the front, under all that molded shroud ford designed.
Sorry, but you can't. Check out " strutmasters.com "
Yes, you should be able to do so although you may have to modify the radiator mountings or shroud. A "civilian" Crown Vic radiator has a smaller fluid capacity and probably a smaller power steering fluid heat sink, but for "normal" driving this should not be a problem. If the police Crown VIc is going to be placed into taxicab service, I would strongly recommend spending the money for the police package replacement radiator.
Yes
Yes
If there, most times they break. Easier to just open the lower hose on the rad. side.
same as older crowns in front of the radiator. 2 horns
Yes
Yes