[silver17]

i recently acquired a 04 crown vic p71 it does not have cruise control and i would like to add it. is the wiring harness equipt for cruise on 04? what years are parts interchangeable?What parts are needed?
as far as performance mods im looking to increase performance by making engine more efficient, i have the stock dual exhaust . would there be much of a difference by going low restrict mufflers? would the computer reprogrammer be aworthwile investment for interceptor motor? I have been looking for cold air system or marauder box for 04 but nobody seems to have one. Anyone know a brand or part # for one that will work on 04 crown vic?
thanks rob