I tried the key turning thing, and it worked on my truck, an XLT w/ power, my cousin had 99 XLT with power and tried the turning key trick and his didn't do it, to double check I called the dealer and talked to a parts guy about getting replacement remotes and he ran the VIN's and mine had it and his didn't. So as far as I know the trick works. I would go aftermarket, Ford wants more than an arm and a leg, plus if you go aftermarket you could get a real alarm sys. for the same price as Ford, and save some $ on your insurance IMO.